Well this coop mission it's being used for is a tough one, and coop campaign "save games" are a bit broken soo most of the time we end up having to replay entire missions because of some weird conditions causing the server to ignore the save games and revert to the start instead, thus deleting our progress.
http://forums.bistudio.com/showthread.php?118731-Arma-2-Namalsk-Crisis
It feels somewhat appropriate for there to be a somewhat strong healing mechanic present for coop for this mods campaign because of how often med-kits were frantically spammed in combat in the original STALKER. I know it's not at all in the aesthetic of the ARMA community in general to have a seemingly cheating method like this, but getting nicked by ones own grenade then being stuck moaning out for the rest of the mission is quite annoying :S Which is partially ARMA 2 to blame for the game (seemingly) having very little to no built-in self healing tools to capitalize on for single-player type missions apparently.
But all that aside if someone knows any better on how to get this working properly for a campaign I would be greatful.