Right now, Disney's Animal Kingdom has closed an entire land to make way for new Avatar attractions. Instead of replacing an attraction outright (for one of the first times in Disney history), The Festival of the Lion King being moved. What follows is a list of attractions that I would like to see be moved, instead of being replaced.
Monster's Inc. Laugh Floor - I actually enjoy this attraction, but it's odd placement in Tomorrowland at the Magic Kingdom always puzzled me. Clearly, this was put here as a need to breathe new life into an existing land, and also utilize new technology, but I wonder if this wouldn't be better suited for the Pixar Place area in Hollywood Studios. Right next to Toy Story Mania is a building that sits mostly unused, and could spread out the crowds in the surrounding area.
I've never been a big fan of the "Door Coaster" rumor that's been spread around the internet since the movie was released. I could, however, envision an entrance that looks like a portal to Monstropolis. You'd enter from the street into an alleyway filled with sight gags and references to both films. You'd enter the Laugh Floor through a back door, and the attraction would continue as it exists today. On the way out, the experience is complimented by a meet-and-greet spot and gift shop.
This would hit the demographics the park has trouble with: families. The attraction has no height requirement, can operate without set showtimes, and will be different every time you watch it.
Magic Carpets of Aladdin - Another attraction from the Magic Kingdom that feels out of place. I feel should be moved into Hollywood Studios. The Magic Carpets would make a fantastic replacement for the queue area to the Magic of Disney Animation and the restrooms in that alleyway. As it stands today, the Magic Kingdom has FOUR spinners (Magic Carpets, Astro Orbiter, and Dumbo x2). Hollywood Studios has none. I would also argue that the Magic Carpets clutter up Adventureland and would replace a little-used queue line for an animation walkthrough.
Wildlife Express Train - I really enjoy this attraction at Animal Kingdom. The train station in Africa is beautifully themed, but then the ride itself shows you some backstage animal areas before dropping you off at Rafiki's Planet Watch, which is a real let-down. The journey back is even worse, with views of trees and bamboo. If I could, I would re-route the train's second station toward the plot of land that currently houses Primeval Whirl in Dinoland USA. That might take a lot of changes to the back-of-house areas at the park, but I don't think that would disturb the animal habitats.