I've noted a lot of the "why a movie shouldn't become a ride" and "no more movies based on rides" threads. When Walt built the park he wanted to bring his stories to life. In many ways he has. Recently they actually started building animated kids rides again (Buzz, most of DCA, Pooh). I say recently because there was a really long dry spell there for a while.
So here is the challenge. Look at the park and pick an ANIMATED feature WITHOUT an attraction... then come up with your best proposal for an attraction based on that feature. The rules, be realistic, has to fit within the land, and no bickering about other's ideas. Be constructive, don't tear each other down. If you can't come up with something then build on the thoughts of those around you. I know Disney reads most of these and while Corporate might not do squat, who knows, an Imagineer might actually use your thought as an inspiration.
If I could build one it would be based on the Jungle Book. I would revamp the Treehouse, slim it down and make it a lot taller. It would be similar to the old parachute ride at Knott's. With monkey "bamboo" cages suspended by "vines" crowned with colorful leaves and feathers. On various branches, out of reach of guests, you could have King Louie's monkeys, Kaa, tropical birds, and an assortment of animals from Jungle Book. Space would be an issue but I think it could fit. I'd use the Pirate bridge for the line.