I like this idea. It would be best, to save memory, if it were smart enough to separate bases that are at a distance from each other, to avoid empty space on the smashed bitmaps. There is one problem with this though. After making a bunker, you wouldn't be able to edit it like normal. What COULD be done, however, would be to make the smashed bitmaps for gameplay but keep the normal definition for scene editing.

I was thinking you could chuck a regular scene.ini into it and out would pop the three .bmps. Beyond my meager programming skills, but a free idea for whoever wants it. I think I'll be making some maps that way manually... A pain to line up the doors and whatnot though.

I like using Maginot to test combat capabilities, because it's almost impossible to lose.