Well, if you can get something to chop trees down into planks, it also gives you lots of splintered wood. Also, if the evac shelter isn’t too far from your camp, but is relatively far away from zeds, the benches give plenty of fire wood. As for the fire cover, I would support it. You would probably need to just make it a construct that has the [INDOORS] or [ROOF] tag, or whatever it is.