I think these kind of zombie numbers are a major boon to the survival elements of the game, and those are the elements that make this the zombie game people have been wanting. This game is almost the multiplayer S.T.A.L.K.E.R. that people have always been dreaming of, but it needs more hostile environments. Firing a gun in a formerly populated area should result in 20-30 zombies running at you. There should be a serious deterrent to "going loud" and not being careful. To put it simply, the zombies should be MORE of a threat then the other players / bandits, this would encourage teamwork while still making banditry feasible. As it is, banditry is not only feasible, it's the generally preferred option to just shoot someone rather then hope they don't shoot you. If firing your weapon ALWAYS meant aggroing a shitstorm of zombies that you have to then deal with, this would make co-operation the easier way of dealing with things without restricting the sandbox gameplay in the way that a simple friendly fire off server flag would. Also, I want to see zombies roaming around in the forests and highways. Obviously smaller groups, but they should be there. The idea that you are basically never safe, ever, is one that would add a lot to immersion. Other things like increasing the chance of random areas and small towns producing weapons, ammo, medicine, and food/drink would be a great way to reduce banditry without making it any less of a viable playstyle. As it is, killing some random guy you came across in the middle of nowhere offers a significantly higher chance of getting good gear then actually going looting and searching spawns, because outside of cherno or airfields all you find is empty cans and junk. That's just my thoughts on the subject.