Just a major comment. I think that the Dev's team's time is currently better spent working on the engine in order to get massive amounts of zombies on the map. Currently PvE is practiacally non-existent. I may be wrong about this, but I believe having to survive hordes of zombies will cut down on KoS.
Just my 2 cents. I do kinda like this idea though. Maybe it is something they should look into.