I actually did take time and design one. Here is a basic version of my concept just for the record. Note that this is meant to be geared to older children/teens/adults (would not be necessarily included in the park hopper if families have small children). Please forgive the names of the attractions! Also, many shops and counter service restaurants would be included. I simply omitted them here
You enter the park similar to Animal Kingdom except that the parking lot is truly separated by a large lagoon on one side (where Dinoland is). The entrance is flanked by large stones all the way around. Scragly trees sit around. You wander through the trees and come upon a line of trees that make a canopy of sorts. They are gnarwled into evil looking faces. Every so often, eyes seem to open, and branches from above bend down, reaching for guests. These trees also house the ticket booths. You then enter a large iron gate with large griffins looking down (think TDL's HM). The rocks are arching high overhead now. You bend to the right in the canyon and come upon the Statute of Last Hope. This large sculpture (about 25-30' tall) is a somewhat fantastical presentation of staircases, walkways, etc. curving up with Villains reach up from the bottom and characters up toward the top. At the pinnacle is a large crystal-looking top that sparkles white. At night, this sends a small beacon of light up. This is the light of last hope (as told by a plaque at the base of the statue). At the other end is a huge wooden and iron gate (20' tall) that is open.
The icon of the park is the Forbidden Mountains with Malifecent's Castle at left center. The pinacle of the tallest mountain raises up higher than the castle itself (and houses a surprise - see below). The mountain has two waterfalls on either side (not at the same level) that create a half-moat.
The park itself is divided into 6 (to become 7) evil areas.
La Ville de Mal: Just inside the gate is a small hub that starts this land, much like MS USA but the other land entries are immediately to the right and left, not at the back. It looks like a small, upscale Eurpoean village. However, the colors, gingerbread, etc. all look a bit darker and twisted. The trend is continued into the costumes and demeanor of the CM's (not creepy but rather a bit more condescending).
Attractions & Stores:
1. Pinnochio's Troubles: This is a trackless darkride that, like the oringial Snow White, focuses on Pinnochio's villains (including a pinnacle scene where the whale swallows the cars)
2. Lady Tremaine's table: The 50's Prime Time of this park, you are served by stepsisters (with the accompanying attitude). You have evening entertainment by flautists that are less than in tune. Look out for the occassional mouse that might interrupt your meal!
3. Prince John's Fair: A small collection of Medeival-themed carnival rides. These include rides more oriented toward an older crowd (such as scramblers, witch's wheels, etc. all heavily themed)
Port Evil: To the right of the entrance is the side of the mountain that spills into a large lagoon (visible distantly from the parking lot).
Attractions & Stores:
1. Hook's Ship: Imagine Donald's ship on steroids (serious soaking potential). This is complete with "creaking" floors, flooding rooms, and, of course, a very large crocodile
2. (Ursula's Spin): Taking a Top Spin to an adult level, you enter into Ursula's lair. Walking along a walkway, the snapping souls are under you, reaching up for you as you wait in line. The ride itself looks like a top spin, but you sit in open chairs facing backward or forward (like an inverted boomerag coaster car). The room is blacklit, and you board. To "Poor Unfortunate Soul," you start bouncing up and down in rhythm. Just as people think "that's all there is? this sucks", Ursula comes down from the celing along with her tentacles reaching for you. The cars reverse direction and, while still bouncing up and down, start inverting as well. Finally, Ursula decides she has "bigger fish to fry" rather than tormenting you, so you return to the base.
3. Flotsam and Jetsom Spin: Boarding a large table of small "cups" which are coiled eels. You start out like the tea cups with you controlling the speed. Halfway through, the two eels in the center (our illustrious pair) glow their eyes yellow, and the ride picks up speed and starts spinning you itself.
Nightmare Bayou: This is a small land that brings the water into the area with thick trees, Spanish Moss, etc. It also connects to the upper side of La Ville de Mal.
Attractions:
1. Gator Racers. Based on the Rescuers, you board large vehicles like (blanking on the villain's name)'s crafts. You then go through a haphazard, high-speed race over the water, interacting with mad residents of the swamp. Caution, you will get wet.
BadLands: This is the largest of the lands taking up the entire backside of the mountain. This is a bit of a hodgepodge of wasteland-like attractions
1. The River Styx: Hosted by Hades, this adventure takes you on a raft through the river, including effects to make the river look as if it is full of spirits. The climax, the drop, brings you face to face with the fates who cut your thread (and you "fall into" the river).
2. Escape from the Desert Temple: The large tiger entrance is your gateway to the desert temple. You enter and board your magic carpets (a cantilevered coaster system). You then come in and swipe the lamp, and, as in the movie, you must escape before the temple colapses. Interestingly, your exit has a colapsed temple that looks (using a disorienting path layout) that it sits where the actual entrance is.
3. Curse of Dragon Mountain: Entering from the backside, this traditional coaster takes you inside of the Forbidden Mountains. You are interrupting Maleficent's gathering and are duly chased, ending in an encounter with the dragon herself. Obviously borrowing from the concept of EE, this would be more of a straightforward coaster with loops and launches.
4. Scar's Tower. Actually two separate towers, this will be one of the park's signature attractions. This attraction is themed to Be Prepared, you board large, circular disks (like a non spiraling gyro-drop towers) that are fully surrounded. As you begin your slow ascent, hyenas appear, and Scar's theme song is sung in an abbreviated form. At the top of the tower (approaching 100' tall), you are discovered and, of course, drop. You come near the platform, rise again, and then drop, this time the floor giving way for an additional 30' drop (thanks to the rising walkway you inadvertently traveled). You then rise to the top of the tower, hyenas laughing, and drop all the way. You uload at the base of the tower, and the next unsuspecting group gets an eerily empty car.
5.
Dark City: This is like a city street run amok. Enclosed, it is perpetually night in the city. You will find various storefronts and buildings, each with a mean and/or evil statement carved or added on. The lightin flickers, and wind seems to always howl through alleyways (complete with eyes appearing and "rats"?).
1. 101 DeVil Dr. Think Mr. Toad's 21st century. Boarding Rocket Rod-type cars like Cruela's car, you take corners, squeal up into wheelies, and race through the town in search of, what else, puppies. Toward the end, you also go crashing down into the ravine and have to splash your way back up to the road. Naturally, the puppies get away (and you and Cruella end up a bit soggy).
2. The Bad Toy Shop: Taken over by the badtoys from Toy Story, this is a Huss inverter (? - like Tomb Raider at PKI). Looking like tinkertoys and other toy-oriented parts, this indoor adventure takes you through cycles of inversions in which the toys taunt you. The shop window actually shows onto the ride, so you get the chance to see what you are getting into. One-way glass keeps the light out. The climax is when the toys try to wrap you in a celophane box.
3. Mr. Sykes canine Circus: Okay, so not a villain, but go with it! This show features tricks by less-than-immaculate canines. Of course, this must include a cat chase and a snooty "refuse to perform" Dutchess appearance
The Forgotten Wood: Another large area, this is the haunted forest from every story's nightmare. It is complete with moving trees, odd creatures' calls, etc.
1. The Haunted Trail. This pathway takes you past slightly interactive displays of famous Disney villains. Sound effects and other effects can be found throughout the pathway. Be careful not to get lost.
2. Croquet of Hearts. Coming onto a large bumper-cars-like surface, you board large Croquet-ball animals. The ride is like a traditional bumper cars until the game begins. Based with large running magnets below the surface, large mallets begin appearing on the side that slam the table. Then the magnets pull certain cars across (this one may not actually work, but I would like to see if it was somewhat possible).
3. Gaston's: This large theater houses a similar number to the title song from BatB (Broadway). Table service-oriented, this is an AYCE restaurant with game-type food. The large hall is decorated much like Gaston's Lodge is in the film. You are served by Gaston's minions or fawners.
4. Madame Mim's Magical Mayhem: Entering Mim's magical hut, this is a spinning coaster which appears to be interacting with the cars while they are spinning. You are in the middle of the wizard's battle, and you, well, get in the way at times and are sent on your spinning way when you do.
Proposed Lands (land 7):
Syndrome's Isle: Reaching the island by a transit-authority-like ride from the film, this is a large interactive area featuring Syndrome's master plan. The major attraction is the Anti-Super Syndrome System. A "flying coaster," this gives you the chance to board flying robots with powers just like the supers, but, of course, you are to use them to fight the Incredibles. Trapped under these robots, you are caught in the action.
HalloweenTown: Taken directly from NBC, this is another interactive area with small fair-type attractions. The large ride is a Spidey-like ride themed to OogeyBoogey.
Evening Entertainment: The park's hours will be offset from many of the others, having a later opening and later closing. The end of the evening (at midnight everynight) is a huge spectacle. The show is best viewed from the front half of the park. The show is that the villains have all met to keep you from leaving the park, enslave, torment, etc. everyone. Maleficent appears at her castle steps and calls upon the villains (portrayed as colors and fireworks from their respective lands). After the roll call, Maleficent conjures up Chernabolg. The top of the largest mountain opens to reveal him in all his glory (this would be technically massive, but a HUGE effect). He appears to his music. He "magically makes the large doors close, trapping you in (of course cast members have cleared this area well before allowing people to exit through side exits that the doors had previously hidden). Then Chernabolg shoots flames into the air (figuratively), and the roof line of the village catches fire, somewhat encircling the crowd. A large fireworks and music display ensues. Finally, we hear a familiar voice (our favorite mouse) telling everyone to come on. We then hear the voices of many familiar heroes and heroines discussing the "light." Next, a large beacon of light comes shining up from the opening statue (think Luxor Las Vegas on a small scale). The villains all respond to the light, especially Chernabolg who returns to his slumber. The doors are doused in light and re-open to allow our escape. As you exit, the walls have begun to sparkle with fiberoptics, the crystal is shining brightly into the sky, and the characters who helped us are lining the ledges above us in the canyon as we exit.
So... that's it in a nutshell. Not the best, but shows that it could be done. Also, alot of extras could be added since several villains went unmentioned, and we didn't get into any live-action films or cartoons.