I love the theming of WDW Tommorrowland, I just wish they'd do more with it.
#1-the speedway has nothing to do with Tommorrowland, it should be rebuilt on the otherside of the tracks with a toontown theme...it's just a bunch of asphalt, so that wouldn't cost much.
That would open up some space to 'complete' toontown (the walkway in to the right). This would help solve one of the problems with MK, not enough room.
This would open up a huge area for new attractions (Star Wars or whatever) with more 'the future of the past' theming. I've always thought that CoProgress should be rethemed both outside (as a giant spaceship that smokes and lights when it turns) and inside (Jules Verne view of 1900, then 1950, then 2000, then 3000 which would be way ahead of where we ended up and far-out with aliens and droids helping around the house)
Pushing the JV theming in the area and adding mod-spinning seats would make Timekeeper much more attractive to see.
They could add some JV space theming to Space Mountain (flying saucers and flaming comets zipping around, a fake JV history of space travel in the walk in, dress up the loading zone to be an Earth Spaceport, and the Exit as a Mars Space Port...the exit then would be the history of the Mars colonization with a transporter effect at the end to return you to Earth).
Now, what would we do with all that space opens up by moving the racetrack?