A developed system as you have suggested above would be good. I would like to see no server restarts to replenish loot and zeds - loot and zeds spawns relative to vicinity of players would be way better.

johnkok, I know what you mean, but the problem with zeds spawning when players are in a close proximity doesnt work, since it is a give away where other players are. Example, if a player is att the airfield, the zeds there will spawn, if i would to come to the airfield aswell, i would see alot of zeds, therefore i know there are other players there at the airfield.
This is why zombies shouldnt spawn when players are close, however, loot is so small that you cant see from a distance, therefore loot could spawn when players are in proximity. This will unload some of the load on the performans, making it possible to spawn in more zombies or simply get a higher performance and less lag.

I can see how that is a problem - it was a great indicator on Dayz mod to show when someone was near. What if the zeds were set to spawn just slightly further than the view distance of the player? That way you would never know and maybe save a little on performance