they would also get rid of helmets, pads, all tacklers would have to at least attempt to wrap-up or attack the ball on every contact, no launching and no hitting a player while their feet are off the ground (a good faith attempt to go at the ball would be allowed if you have reasonable position), all plays and penalties would be reviewable
it would change the game but that would be the pathway to making the game a lot safer and it wouldnt make the game less physical but it would make it a different kind of physical and im not sure any coaches, or committee or the league itself is brave enough to do anything like that