We got the ride we have now because Kodak pulled out halfway through rebuilding the ride. Disney had to scramble to get what was left into a workable concept, so you ended up with, roughly, half a ride. The upstairs was closed because it was hard to access.. the stairs weren't very wide (you can still see them as you exit the gift shop), and the elevator was tiny. Plus it was hard to supervise.
The rest of the track is still, apparently, in the building, waiting in case it ever gets redone again, but I'm not holding my breath.