If a hit is obvious in nature designed to injure, then he should be brought up on assault charges, lifes rules should apply.
But with that said, compare it to boxing, a sport designed with the intent of bringing your opponent to his knees, preferably out cold.

Should we apply new rules to boxing, so as to make it safe?
Maybe memory foam in the gloves, helmets and body padding?

Point is, these people do what they do, because they love it, and are willing to accept the dangers associated with the sport for its rewards.

But I agree, if a player is purposefully trying to injure someone, then charges need to be filed, not just a fine and a mild suspension.

I wish the line were that easy to see. Leading with your head to block or tackle isn't the same thing as a close line. But it can cause serious long term health consequences.

Yes many things are not avoidable. Blow out knees. Torn rotator cuffs. Ruptured discs in backs. But the dementia, parkinsons, lou gerig's disease and the like could be greatly reduced if we just made them stop using their heads as a weapon. That's all I am trying to say.

Lets try to minimize head injuries. Lets ban enough people for steroids that it stops looking lilke a way to get ahead. All I am asking is to make things safer in obvious ways.

And FYI it would be easier to say let them do what they want if we were only talking about adults making millions. But all of this stuff also applies to kids in high school who have no future economic gain from the sport. Kids immitate the pros. That makes the line fuzzy.