It would be a nice additional feature to make it possible for a Mission Editor to place items such as ammo crates, and such inside buildings instead of just stuck placing them outside. This will add a bit of realism to search and destroy missions, such as the popular mission Invade & Annex. This will also allow players to place their ammo boxes inside structures for the purpose of a hold position, or popular known as Defense-based mission, so the player isn't forced to go outside and gather ammo and risk being killed within the cross fire. This'll also aide in the common issues of HQ's being bombarded and the plaers within the area getting wiped out upon spawn.
I thank you very much for giving this possible feature a view, and hope you could implement this into the editor for those players who enjoy making missions.