To Save Time...
To save time here is all of what I would do if I were head Imagineer. Magic Kingdom is near perfect but if you are going to revamp it, here is how you should go about it.
1. Tom Sawyer Island if converted to another ride should either hold something like California Adventure's Grizzly River Run, however that might overshadow Splash Mountain. Or, a Skull Island/Pirate Ship comeback (but that takes away from the overall atmosphere), or possibly even Journey To the Center of the Earth? The Rivers of America should be kept, but I think a Colonial Ship (with maybe Peter Pan/Captain Hook appearances on occasion) would fit better, especially since the dock is in Liberty Square.
2. Adventureland is not dull, but has serious potential. Personally, if Pirates of the Caribbean is going to be revamped it should be more thrilling, but still endearing and fun and most importantly filled with whimsy. Jack Sparrow is a nice touch too. 20,000 Leagues should be brought back, but instead of Fantasyland it should extend past Pirates of the Caribbean (incorporating a bridge to the Walt Disney World Railroad would add a sense of Adventure to that ride as well). They could also incorporate Journey to the Center of the Earth there. Another character tie in could be the Aladdin stageshow from California Adventure. Swiss Family Robinson is also sadly on the chopping block and if it is to be replaced it should be Tarzan themed (like @ Disneyland) except maybe with a ride like the Indiana Jones roller coaster. Also, Disney classics like The Jungle Book are also overlooked and Adventureland could provide a perfect setting for a Jungle Book themed ride or show.
3. Liberty Square should have a Sleepy Hollow or Jamestown (you know, like Pocahontas) look would add a Storybook quality to it that has never been seen. This (Sleepy Hollow look) would highten the creepy factor of The Haunted Mansion and bring more attention to that corner of the realm. Pocahontas characters should also make appearances at Liberty Tree Tavern.
4. Pooh's Playful Corner has to leave ASAP to make way for possibly Alice's Curious Labyrinth, Mermaid Lagoon (like from Tokyo Disney Sea), or even a revival of Mr. Toad's Wild Ride and possibly an introduction of Pinocchio's Daring Adventures. Speaking of Pinocchio, Pinocchio's Village Haus could make for a wonderful table service restaurant with characters (for those who cannot experience Cinderella's Royal Table) and the land behind it could be a new E-Ticket attraction. They could even put in a reproduction of the Snow White show in Disneyland. Mary Poppins, 101 Dalmatians, Bambi, and Pinocchio are all classics that deserve some attention in the theme parks as well.
5. A great place to incorporate the Winnie the Pooh theme would be Mickey's Toontown Fair. A 100 Acre Wood addition would add a heightened level of whimsy and popularity to the area. Otherwise, it is not in need of any tweaks.
6. Tomorrowland has a ton of unused "space" (no pun intended). Carousel of Progress (while a classic) needs to be replaced. I can easily see a Monster's Inc. attraction being placed there or maybe an Incredibles themed roller coaster. In the future, however, I feel that the Indy Speedway will eventually make way for a slew of wonderful new attractions. Maybe even a new land. Some consider the Speedway a classic, but ever since it has been modernized I feel the enchantment of the previous Autopia ride was lost. That area needs some serious enhancements.
7. Concerning Main Street, U.S.A it is perfectly enchanting. Tony's Town Square has great character potential (Lady and the Tramp are obsolete at the park if no one has ever noticed) and honestly I think the Hub needs its trees back. It condenses the park. Currently, the Hub seems a bit naked, who cares about a perfect view of the castle... atmosphere is what it's all about.
8. Speaking of the castle, Cinderella Castle Mystery Tour would also be a fantastic addition. Think how much more popular the castle would become. Restaurant and a Ride, that place would be a tourist magnet.
Like I said, I am content with Magic Kingdom, but if changes are to be done, this is the way to go about it. These suggested rides would be a more permanent addition to the parks instead of being just temporary tourist satisfyers.
