[SUGGESTION] A practise/chillout/casual server request

I haven't read everything in this thread, but I welcome this idea and think it would be a great thing to have. There should be at least one for NA Community and one for European Community, if not even for Australian Community, but those are details one would have to settle once the first server is up.

In order to avoid other people raiding the server and stealing the fun would it be possible to implement a system that every player can set by himself (clientside triggered) if he is afflicted by other people's damage, force and collision? Possibly even on a per-player basis? Or even if he can SEE certain or all other players at all? If we could manage to do such a thing then it would be rather hard to raid the server in the first place, no need to ban people.

I don't know if the engine is capable of doing that without total cvar chaos, since it would come close to applying different physics/weapon balances to each player... but a intuitive system like a graphical menu listing the players and their "permissions" would be quite suitable for such a server.