EPCOT used to have this great experience, each of the pavilions in the front part of the park could occupy an hour or more of your time easily, (aside from any time spent in line) going through the rides/experiences/exhibits in them, and then travel back to the countries for meals, movie/show/ride (in two countries) and a cultural experience. Now, most of the pavilions are good for 10-15 minutes at best (except maybe The Land and the terminally long Universe) as there just isn't much left in them that is enjoyable. There used to be so much more to experience in the front of the park. Now that the front seems to be moving to thrill style rides, the countries need to support the more family style entertainment. Mexico and Norway had nice rides that were moderately educational and enjoyable. With the number of people going to these parks, there needs to be more available to spread the crowds and entertain the masses.
England could offer walkthroughs of some of there amazing history (walk, omni or boat). Not a thrill ride, but a nice addition to the current experience.
China's movie just needs an update.
Germany could offer a Rhine river cruise of some type (think this might have originally been in the plans).
Italy has so many options its frightening. With all of the cultural history, thrill potential with Pompeii, Venice boat ride, etc., there are many options here.
Japan - bullet train ride (in the original plan I believe), countryside aerial tour (360 movie would be fine)
Morocco - again, cultural history that can be explored through film, short ride of many types, many options here.
France - Ratatouille may fight, but I really don't want to see IP in EPCOT. Put this ride in at DHS in
Pixar Place (Toy Story land is an awful idea).
That's after 5 minutes of thought. I bet after 3 months of careful thought amazing ideas can be created that stay closer to the vision of EPCOT without making it a spread out Magic Kingdom.