I really wish someone just made new kind of doors that used a mish mash of bricks and animated static shapes.
So, for instance, when you open a door, it becamse a frame with animated static shape put into it, and once the animation is done, the blb is changed to the open door brick.
So you will only need 3 blb's and one static shape for a door. Doesn't sound too bad to me.
I'd do it but I dunno if I have enough motivation for it yet.