Having NPC run safe zones would be a nice addition but I think in order to preserve the realistic nature of the game I have few points about your original idea I would change. 1. NPC's pursue murders they've witnessed within the safe zone and within a certain distance outside the safe zone to X boundary outside the came. NPC's investigate gunshots they've heard from within the camp for X amount of time and keep an eye on the relative area of the sound of a gunshot outside the safe zone. Walking into a safe zone with your gun not lowered might cause NPC's to watch you more than others. I don't think they should be auto-attacking players with low humanity, maybe players with excessively low humanity, like -50,000 or so become "known" players to the NPC's who the NPC's shoot on site. 2. NPC's should be able to be killed and respawn 24 hours later out of a random door in a random building in the safe zone. 3. NPC's should only be carrying common equipment like a winny or lee enfield with a makarov, binoculars, and a random smattering of food, water, and other common misc equipment. 4. Safe zones have a maximum occupancy, when it is reached, NPC's warn approaching players to stay back at X distance, shoot warning shots at players feet at Y distance if they still approach, wound players still approaching at Z distance, and shoot to kill players who still try to enter. That being said, players sneaky enough should still be able to sneak into safe zones. 5. There should probably only be 3 of these safe zones, a big one in the south for early game players, and 2 small ones in the northern areas for late game players.