I won't keep this a secret. I have seen some of what was to go inside and have been inside during construction. However I won't say too much other than this;
I wasn't as opposed to Monsters Inc. going into Tomorrowland until AFTER I had seen it. I'm sure the queue is going to be the point of "tie-in" but the show theatre itself belongs elsewhere. In a few months, I think we might be able to tell better, and maybe the experience is just a knockout anyway. As of right now though, from what I've seen, I'm not so sure.
Is it perhaps that Stitch's Great Escape is right across from Timekeeper that WDW opted NOT to have a Stitch Encounter like in HKDL?? That would make sense. So they would have to look at other sources besides Stitch in order to find a replacement for Timekeeper...
"You're not thinking fourth dimensionally!" -Back to the Future
"With this place, I wanted to give them something real, something that wasn't an illusion, something they could see and touch. An aim devoid of merit."
I'm going to wait to see what they eventually unveil before I make up my mind either way. Unless it's just horrible I'll probably enjoy the show as I enjoy most everything Disney has, but I'm not sure whether I'll like its location in tomorrowland or not.