In hockey, some have called for the removal of helmets to make the game safe. Rather than remove the helmet, make it a helmet that breaks if it has an impact that is too hard. Then the player and his broken helmet would need to sit out the rest of the game.
I favor throw away helmets, not toss away players.
After rejecting a proposal that would have forced players to sit out at least one play if their helmet is dislodged, the committee decided to gather data on how prevalent the problem is in college football."