I quite like the idea of a larger presence of The Muppets in Hollywood Studios, but not given their own land to exist in, but actually exist within lands in their own attractions but themed to that specific area. They are pretty well known to reference pop culture, so to pop up in places like Rock n' Rollercoaster or Star Tours (and the now defunct Great Movie Ride) I think it's a way of freshening up an attraction without the great need to having to do any kind of major infrastructure to the original attraction.
Also, any kind of way of getting some kind of Muppet Christmas Carol show/attraction would be amazing!
It's still considered one of the best Christmas films ever made, the fact that it doesn't have any kind of presence in the parks is criminal.