Speaking of parks that were/are rumored or never came to fruition.
There was a park called "Disney's AMERICA" (you've all heard of it before, I'm sure).
Disney was DEFINITELY going to move forward and build it. Then Pocahontas came out. The got so much backlash and so many prostests about how historically inaccurate the film was (and is, I'll give them that), and how historically inaccurate the park would be as a result (how they figured that, I can't begin to comprehend), they shelved the park completely. They then formulated a "Plan B", which became what we know as "Disney's California Adventure (1.0)".