You should add Human AI Bandits for PVE servers. Collecting guns & ammo just to have nothing to shoot at. AI would allow you to have the action of a gunfight thats more reasonable than pvp. If you're good at zombie combat, you don't need to shoot them. Nor is shooting zombies as satisfying as shooting people that are shooting back at you. These bots would have to be inaccurate or forgiving unless their damage is significantly reduced. Look at DEADSIDE. The AI bots PVE element adds a fun layer to the game. There's times where you're carrying tons of guns and ammo but you get sniped by a player before you can even fire a single round. But let's say you've killed 20 bots and won those gunfights, it'd ease the blow from dying to a player as well as give you target practice.