Would rehaul Tomorrowland, there's no cohesive theme right now, every attraction is different from the next and even has attractions that have nothing to do wi "tomorrow".
If you could add an attraction from a Disney property that is not represented in the parks, what park would you put it in and what would it be?
I would replace Rockn Roller Coaster with a LOST themed coaster with the 3D technology of Star Tours. Imagine a scene where the smoke Monster is chasing you through the island via screens like on Expedition Everest!