Here's how you balance the PvP issue: Give incentives to players to keep other people alive. As it stands right now, 99 times out of 100, another player is more of a value to you dead (i.e. no threat) than alive. The best way I can think of achieving this is by creating player classes that players select when they spawn. For example, if you choose to be a Doctor, you have the ability to use bloodbags and other advanced medical aid, while other players can only bandage themselves and apply rudimentary first aid. Another player may choose to be a Mechanic, allowing him to fix cars while other classes cannot. Players who are Soldiers have the best combat skills, but they cannot do other things as well. And so forth. This would encourage players to team up instead of just deathmatching across Cheranus.
