I've been playing with these guys since the beginning, and as to the issue of FPS that's what the "use common sense" is for. If you have a 400+ FPS gun (usually a sniper rifle) then don't use it up close, instead have a side arm, or at the very least aim for center mass and not the head. We're all there to have fun so we don't get too serious, but not at the expense of some one being seriously hurt.