I remember there was a rumor that the Muppets would be included in the ride, and that they would basically replace the actors in all the scenes you see now.
haha. That would be just a bit too werid and too much to fill the entire rides with Muppets Replacing the characters of these classics.
What it sure does sound like was the original planning for The Great Muppets Movie Ride where Jim Hansen himself even talked about it being a dark ride based on more movie making than going into the experiences. You would have scenes and departments of muppets explaining different aspects of the movie making process "with advice that no one should take." Sounded like a cute concept. Mind you this was the resort going into the 90s where Disney also officially announced that an EPCOT version of the Matterhorn was coming to a new Swizz Pavilion in the world showcase among many other things that did not happen.