I have to admit that one of my pet peeves is finding a door that isn't. I realize the whole mods fixing that issue thing, but I am going to officially say that, especially with minimal loading screens, having more places to duck out of the line of fire would be most welcome. I guess I'll have to wait and see how it works out. I guess that am the opposite of the "better no building space than boring building space" crowd. For me, even an empty room is something that might have a use. Makes me wonder if the crafting things like turrets has a proximity limitation to the crafting bench. I personally would love to be able to use small, empty spaces to set up small caches of supplies guarded by a couple of turrets.