Allow more structure objects to overwrite others (i.e. Doors placed over walls)

[AnActualDuck]

The way you can just place a door on a wall and the colonists will deconstruct the wall and install the door is convenient. It'd be nice if you could do the same thing with placing auto-doors over doors or different wall materials over existing walls. I'm sure there are other things this could be applied to but those are the two I'd most like to see.

[erdrik]

+1
Vents and Coolers are good candidates for this.

[5thHorseman]

+1

Walls over doors is one I've wanted many times.

And ANYTHING new over ANYTHING that's queued for destruction.