I usually listen to Moving the Chains on Sirius XM NFL Radio on the way home from work, mostly out of habit. Believe me, we aren't the only ones feeling this way. I'm hearing this a lot from callers on that show who are not Steeler fans.
My suggestion would be to allow all the blocking and tackling you want, except head hits, and initiate a 300 lb. weight limit.
I'm for ALL hitting. Make them wear better equipment or go take up tennis if the game is too rough.
The NFL has only themselves to blame for that.
This is a valid point in my estimation, they have better helmets already but they don't be cool lookin'. They have pads and protection available but that might slow them down too much and the OL has non- metal knee braces available but they feel awkward. If you really wanted to protect the players, the equipment would be a good place to start.