I as a kid also enjoyed the heck out of Future World. And, they did a darn good job of disguising how educational it was in the process. The World Showcase on the other hand was a huge bore as I recall, minus the troll ride (RIP) and the mexican ride.
I'm still miffed that they so royally screwed up Imagination. But all that aside, I think the main thing thats really missing from EPCOT is the Future bit. Their exhibits are largely lacking in the excitement of the future aspect. Quite frankly, I don't get this, as there's plenty of material to work with. As an example, when we went to Disn