Of course, the obvious safety provision is wearing helmets. There is resistance, however. We don't need helmets. They'll ruin the game, make it more like boys' lacrosse. Checks to the head are illegal, and called, in boys' lacrosse.
Helmets reduce unnecessary risk.
Helmets protect the players and preserve the best features of the game. Anything else is negligence. Otherwise, our luck might run out. That's where we would abandon the idea of college athletics. At that point you go to farm teams and people should decide whether or not they want to go to college or not, or if they should go directly into athletics.