I think moving small world to Epcot could or would work well. The ride will be fifty years old and could use a big refresh and change. It could anchor the World Showcase and become the Weenie for that side of the park and get updates to keep it strong for another 50 years.
Disney really should then look at revamping the dark rides in Fantasyland starting with the then vacant IASW. Turn the space into a Tangled Ride.
Next Move Mickey's Philharmagic to the studios, by using the Little Mermaid show space in the studios for Mickeys show.
Then combine the space with Pan's for a grander upgraded experience using a different IP like Pinocchio.
The Princess hall should then combine with Pooh for a bigger better experience "D" becomes "E" upgrades.
Beauty gets a Ride like France is getting behind the Restaurant.
Next to that and behind the Circus build Neverland. Then move Peter Pan to the new Neverland area of Fantasyland.
Remove and replace the circus area with Wonderland and an Alice Ride.
I know this may sound like a big project but the classic dark rides were great family experiences that said Disney like little else. This kind of change would make fantasyland a must see land for the next 30 to 50 years and keep these time tested IP's in the publics eye.
I worry that the attractions are falling behind the newer rides like Shanghi Pirates or Mystic Manor, and could really use some big changes to stay relevant and competitive. Changes that could actually require teardown and reconstruction.
A great example of outdating a ride is the Jungle Cruise ride, once you've rode Kilimanjaro Safari the JC ride is almost embarrassing. Update the JC ride with Dinosaurs and it becomes must ride again.
With the 50th coming up Disney really should be looking at keeping it's Parks Lands, and rides relevant for another 50 years. They probably need a twenty to twenty-five year plan to expand and revamp and rebuild the entire park.