As a fan since the seventies, I think the worst decision at WDW was to build additional gates. In my opinion, there should be one park with very large lands where guests would spend a day exploring a single land. For example, Future World and Tomorrowland could have been combined. Imagine a first time visitor seeing Space Mountain with Spaceship Earth in its immediate background. Everest, Safari and Dinosaurs could have been placed in Adventureland. Fantasyland could have had a movie section. As guests entered the park, they could have experienced "magic" as they board a steam train and go to Adventureland/Frontierland or board a people mover and go to Tomorrowland/Future World. Yet everyone would still be able to go see the castle.