Riiiiiiight... guess I should join in finally! From what I know, planned (as in plans exist) for WDW were
In the Magic Kingdom:
A building with a rockwork facade in Adventureland, where PotC was built instead.
Thunder Messa with the WRE
The Little Mermaid (dark ride) - Mickeys Starland
Tomorrowland train station
One Mans Dream (TDL Import)
4 Track Space Port (became 2 track Space Mountain)
Plectus Fantastic Galactic Revue
From Time to Time CV360 with morphing Animatronics
EPCOT Center:
The World Showcase nect to T&TC
EPCOT Theme Center (became Futureworld)
Spaceship Earth - with the main ride in Earth Stations area & a Geodesic dome housing a planetarium
The Universe of Energy - massive, curved building with larger theatres; also looking at Storm energy
Health and Life - became Wonders of Life
The Voyage Within - dark ride, became Body Wars
Century 3 - became Futureprobe, became Horizons. Was to have spiraling track upwards in what became 50s future scene to loop round 3 Omnimax screens
Journeys in Space - the preshow became Mission:Space
Transportation Pavilion - 6 cirular buildings joined in a ring with atrium. Was to have large ground level trackway from ramp out of building (became WOrld of Motion, track idea used in Test track)
The American Adventure - situated at gateway to World Showcase from Futureworld, on legs. Initially a dark ride, the attraction developed to a stage show with Ben Franklin, Mark Twain and Roy Rogers as hosts.
Journey into Imagination - with unload upstairs in the Image Works (and green Figment!)
Great Moments at the Movies
Mineral pavilion
Science and Invention Pavilion
The Land: Rainforest observation deck, hot air balloon ride, Drilling machine thrill ride, arctic zone
The Seas pavilion (became The Living Seas)
Maelstrom - the final scene was to be much larger and live up to it`s name
Safari Africa, became Equitorial Africa with 3 shows
Germany - Rhine River Ride
Italy - Gondola ride through venice
Japan - Meet the World Carousel theatre, Ginza district, and Mt. Fuji Rollercoaster
France - Expodition hall
United Kingdom - Crystal Palace Vaudaville Theatre
Russia
Switzerland with Matterhorn
Israel
Spain
Saudi Arabia
South Korea
Scandinavia
Poland
Brazil
Holland
Australia / New Zealand
Taiwan
Costa Rica