Given the way Disney spends money that should get you 3 E-tickets.
If you gave me $3 billion on top of the current projects in the works (Avatar, Toy Story and Star Wars), I could fix all 4 parks. If Disney can't do that it's shameful.
MK: Fantasyland expansion. It's a small world and Tomorrowland Speedway are relocated, Tomorrowland gets redone w/Carousel of Progress relocated. Fantasyland expansion would include Peter Pan, Tangled, Frozen on it's a small world side and something else on Tomorrowland side
Epcot: Future World improvements: Imagination, Universe of Energy overhauls with family friendly, non IP driven e-tickets. Fix SSE ending. It's a Small World to Showcase Plaza. Carousel of Progress and Horizons Century 3 attraction in new pavilion on Wonders of Life footprint. Peoplemover in Future World. When all that is complete, evict Nemo and Frozen
Hollywood Studios: Expand Pixar footprint to include Speedway style Cars attraction with miniature rock work. Additional Pixar attractions to be added, Rock 'n' Roller Coaster courtyard to be connected to current Animation Courtyard area.
Animal Kingdom: Fix the Yeti, Redo Dinorama into character driven area, Expand Kali River Rapids, Add lion exhibit on pathway between Avatar and Festival of the Lion King, add Orangutans and Red Pandas to Asia section of the park.