Seeing as how Disney's current strategy seems to be to turn established brands into concepts for their new rides (and lands), it's no wonder EPCOT's Future World has been on the back-burner for some time. Disney seems to want to put properly Disney Movies in MK. Movies they own that aren't associated with the Disney brand go to DHS. DAK's long-term vision, at least for now, seems to be put in Avatarland and then figure it out.
There's a rumor about maybe possibly bringing Brazil into the World Showcase, but as for Future World, it's in limbo. They can't close it, but its muddled message has been noted. Updating Test Track to reflect changes in the car manufacturing industry is an easy way to boost attendance and keep the park semi-fresh, but what about the future? Disney can't rely on updating their current stock forever. What do you think will happen, based on the trend of cross-promotion? Will we see Up in The Land, or Wall-E in Universe of Energy? Do you think they'll start shuffling old attractions out and find a brand new theme outside of Future World?
Take Journey into Imagination, for instance. The ride's a stinker that can't draw a crowd. The old version was great, but too expensive to maintain and therefore probably not worth it to keep open, as it wasn't a brand new ride and couldn't be counted on to bring in new guests. They cheapened up the maintenance by stripping down huge parts of it, which led to a huge cry of anger, and now we've got a semi-better version. I don't think they want to spend the money to make this a good ride again, so my guess is they'll kill it in the next 10-15 years. They then have a deserted pavillon. What would you do, if you were in Disney's current climate?
tl; dr : What new theme do you think Future World will take, if any? What should it take? Do you think there's any way to create a park under Disney's management system without relying on brands and established Intellectual Property?