Ish, you being a doc in physical rehab is all well and good, and obviously one of the reasons why you hold the opinions that you do. However, it doesn't take away from the fact that football (as well as other sports) are inherently dangerous to begin with. Outlawing cut blocks is just a step. Once that's removed they will look at the next "serious" injury-causing factor, then the next, then the next...then, it's not football any longer. It's something else. And while 120 other teams may not employ cut blocking as a staple of their blocking scheme, I'll bet they all teach a form of cut blocking particularly with pull guards and TE's on toss/pitch plays.
Here's my prediction based on what I've been seeing lately: QBs are going be wearing red shirts (or something easily identifiable) and will be considered "tackled" just like you see in a Spring game. Why? Because more and more we're seeing concussions as a result of the head slamming into the ground from a tackle. The powers that be are going to address it sooner or later, and it's going to change the game drastically. Why will the do this? Because it's the result of the slippery slope of removing every and any possible cause of injury, particularly to the head.