So can you explain me the miracle of Reno locker ?
TBH the only thing it was different from "sewers" and dungeons is no npc and middle of the map.
And one more thing, if it's so damn hard for many players to live without this loot/box PvP, just make it on your own. What's the problem, make it few times, than Kilgore will see it and I think if he will see so much determination he will add this box.
I think UV with Napalm was trying to do something like this.