I'd ...
- Set up an exclusive apartment for me at all WDW resorts(esp Poly, WL, BC, and BW)
- Add Tokyo Disney Sea as a 5th park
- Modernize all of the old rides with new technology (new soundtracks, effects, AA, etc.)
- Reopen the Skyway
- Reopen 2KLeagues
- Move Mission Space to Tomorrowland (between Skyway and CoP) and leave Horizons
- Remove tombstones from Epcot entrance plaza
- Remove Ellen from Ellen's Energy Adventure
- Extend Test Track with another mile of high-speed turns and hills
- Bring back the original JII and Image Works, and modernize them with new effects and such
- Bring back the Millennium Pavilion in WS
- Add Switzerland and the Matternhorn to WS
- Add Africa to WS (a water ride through the jungles would be good here)
- Move the dang Sorcerer's Hat from the middle of MGM to the middle of Animation Courtyard
- Replace Doug with Superstar Television
- Add an Indy Jones coaster or dark ride to MGM
- Add BK and all concept rides/attractions to AK
- Leave AK open at night and introduce night-safaris