What you are talking about would require fundamental changes in the game regarding contact, physicality, etc. That is the only way players would have a chance of playing that many games. It would involve changing from tackle football to touch football, or close to it.
Look, it really is simple. Tackle football is an extremely violent, full on collision sport. Always was and always should be in my opinion. Those that do not wish to play it, or have their kids play it, certainly have the right to opt out. Otherwise just let it be, caveat emptor.