You know what they could do with just a moderate amount of effort... rotate through all of EPCOT's 3-D movies throughout the day. They can rebuild them. They have the technology. Better than they were before. Better, stronger, faster.
Just a constant rotation of Magic Journeys, Captain EO, Honey, I Shrunk the Audience, and maybe even have one of the cartoon shorts before each show. Could even help with the park's capacity a little if some people want to see more than one show.