Favorite Imagineer
Hard to answer, with such a collaborative effort it really is hard to single one out, but since that's what I'm being asked to do, I'll just say Joe Rohde for obvious reasons once you read the rest.
Favorite Park
Disney's Animal Kingdom Theme Park
Favorite Ride
Very Hard to narrow down but top favorite include The Haunted Mansion, Mickey's Philharmagic, Spaceship Earth, The American Adventure, Tower of Terror, The Great Movie Ride, Kilimanjaro Safaris, Expedition Everest, and Dinosaur. I know that's a lot but honestly the perfect Disney Park would probably contain all these attractions in my mind (and then some)....
Favorite Show
Okay...Well here, I'm using "Attraction" as a definition for ride and "Show" will be a staged scheduled event. So with this one I would have to say probably Fantasmic. It's so hard to narrow it down, Illuminations is irreplaceable, for example in my opinion, but few shows can get me as emotional as Fantasmic. The only other one that comes close is Finding Nemo: The Musical.
Favorite Land
Again this is very hard to narrow down, Land is so broad and not all the parks are divided into exact lands. But top Favorites would include World Showcase at EPCOT, Asia at Disney's Animal Kingdom, and Hollywood/Sunset Boulevards at Disney's Hollywood Studios.
Ride that needs a refresh
The Backlot Tour at Disney's Hollywood Studios. So many people are so quick to write this off and say let's replace it with Carsland, I would not like that to happen, I would like the Backlot tour to be expanded to be a real E-Ticket Attraction to bring the Hollywood back to Hollywood Studios. That being said, There are so many other rides that need refreshes like The Great Movie Ride, Space Mountain, The Universe of Energy (Just updating facts and the AWFUL animatronics but other than that keeping it the same) and many more...