The issue I have is the now-muddled theme makes this difficult to pull off. Having a sort of creation of the EPCOT central model could have been cool. But I don't know what you would do at the front of current Epcot to make sense. It's not future any more. International would work - but at the back of the park where there isn't room. Natural design maybe, but that would need to be West.
Unlike classic Hollywood, whimsical Victorian or African Lodge - there isn't a defining "Epcot" style that works at the current front of the park other than vaguely "modern". And that will look dated quickly, let alone just be Contemporary 2.
Away from the hotel thought for a moment:
They should get away from the concept of "theme" so much in a transportive sense and do a presentation sense.
Modern panels up the wall to provide use and aesthetic could work. If the building were not so dang tall it would be a lot better.