The problem with 3D right now is a) lots of movies are made with crappy 3D systems, doing processing in post production instead of actually filming in 3D to begin with. And b) 3D is still used as a gimmick where the director flings crap at your face for 2 hours straight.

So I think if 3d could move beyond it's novelty status and begin to be used to tell stories better (assuming hollywood has any good stories) it could be really great.