I agree. I firmly believe if you put guys in equipment like was worn in the 50's, you'd see far less head injuries. Players today feel emboldened. Put a 1 or 2 bar facemask on them and you'd see way more arm tackling instead of these head shots. They also need to increase the fines. Don't just set a fine in dollars. Set it as a percentage. Make it hurt.
I like grass fields, but that isn't always possible with a dome, but you can add a padding under the turf to make the surface softer.
There is now soft helmet technology. The outer shell gives on impact,. NASCAR has been in to soft walls for a good while now. It makes sense to me. Lessen the shock before it gets to the body.