Kill zeds or players so they fall across the threshold of an open door. Close the door.

Should be handled by either:

A) Doors are blocked (no close door option) until the body is removed. (So we really need a feature to carry/drag bodies...)

or

B) Doors will push blocking bodies out of the way when opening/closing. Unrealistic, but better than bodies clipping through closed doors. Could be less immersion-breaking if there's an animation of the player pushing the door with force (and the corpse ragdolling across the floor...), taking longer time than usual.