It would be nice to be able to group scenes. I currently use scenes to control a variety of parameters - some only control Hidden Objects to toggle design options, some only control Hidden Tags to toggle what I am editing (site/architecture), some control fog/styles, shadows and section planes, and some control Camera locations. Because of this, I have tons of scenes in my top bar which are difficult to organize.
Another feature could be only animating the scenes within a specific group, so you could have multiple animations in the same model. (interior and exterior)