I agree with the previous poster.
First of all, when I first did this attraction I thought it was better than was being given credit for. However each time I do it, I dislike it more. It really is a waste.
HOWEVER, like the previous poster said, with that building layout, if they keep it like that, there's only so much they can do.
One obstacle I think that Disney has as opposed to most theme parks is that they never close for the winter. They do not want to HEAVILY show construction and demolition and without a closing season, it's hard for them to really do this kind of work without it looking bad.
Putting in a new attraction is one thing, but realistically they need to tear the building down and rebuild it to get something great in there, and Im sure they've actually at times thought about and wanted to do it.
However, can you imagine the scene that would be tearing down and rebuilding the entire building? It just would look bad and I think this is the type of thing that REALLY hinders Disney and stumps it's imagineers.