the new first view person feature is pretty cool, but for now not very useful. A fantastic thing thing to add would be the ability to tether the camera to a sprite/object. just find the coordinates to any given sprite/object, and in real time match the coordinates of the camera to the given sprite/object. Also allow the ability to make any sprite/object transparent in first person, as they could get in the way of the camera in some games.
also, the ability to make all sprites/objects render sideways for top down games ( ie. Legend of zelda) would also be a nice addition as well ( assuming that it would be easy to change the formula for making games 3d.)