On the issue of egregiously hard fouls: I, having started this thread, obviously agree that refs need to grow a pair when such fouls happen.
OTOH, what are we as coaches doing. If we have a player who commits such a foul, are we pulling them out, sitting them down, and explaining that such plays have no place in the game?
If you leave a player in the game who injures another person, card or no card, aren't you condoning the behavior. As the coach of the player who got taken out I'm upset that the ref did almost nothing. But I also blame the coach who tolerates that kind of play.