I hope the NFL never adopts the 4th & 12 to replace onside kicks.

I think it needs to be harder. Maybe a 4th and 20. But it’s the play that should replace the kickoff. That’s how the game starts, that’s how they line up after scores and to start the 2nd half. Teams can run it anyway they want. Punt, lineup to attempt to convert, etc. NFL kick offs stink and on sides kicks aren’t much better. This new wrinkle would be a welcome addition to put some life back in the “kick off” plays.