Not a fan of some of the rule changes like eliminating kickoffs, but I might take a look.
I heard an interesting idea from Greg Schiano of all people...
After a score or to start the half, the team that scored or the one that is supposed to “kick-off” gets the ball on its own 35, with a 4th and 15 situation. In most cases, a team facing 4th down and 15 yards to go will punt and punts are safer than kick-offs from an injury standpoint.
If a team is desperate though... you go for it. That way, you can eliminate onside kicks, but have a mechanism for going right back on offense.