I can see the EPCOT concept being successfully executed, and I think it would end up like Celebration, Florida. Not a suburban ghetto, but a high-priced 'perfect' community where having lawn flamingos is punishable by a $500 fine. The concept could only be executed where real estate prices would be guaranteed to be permanently high, such as near Walt Disney World. It wouldn't work in rural Minnesota. So the concept is limited to one, or at most a very few, sites.
The house in the first pic does appeal to me, though probably not to everyone, and perhaps not to most people. (I tend to really like those 70's Popular Mechanics designs.) Architect-designed houses tend to be very impractical places to have a family in, as they tend to have lots of glass and open space and few areas you can allow to get messy without the neighbors seeing in.