It would be nice to see some more colaborative workflow features. For example, being able to reference animation, or parts of scenes from other scenes would be great! i'm not sure exactly how this could be implemented, but it would sure help out in a production environment where several artists are trying to work on parts of the same scene at one time, and some one doesn't want to spend an hour each day rebuilding or "loading from scene" every time there's an updated element in a large or complex scene.