I for sure would want Bambi, The Jungle Book (shame they scrapped it from BBS), The Fox and the Hound, Lady and the Tramp, The Arisotcats, a Lilo and Stitch world on Earth, Brother Bear, The Lion King II, Toy Story, and Monsters Inc.
I know most of those are animal-related, but I'm an animal person so...
Also, not Disney, but I'd LOVE to have a The World Ends With You World and have Neku and the gang actually be in your party rather than just in cutscenes. A Shibuya world would be so awesome....