The cut block is a core staple of the zone blocking scheme. I agree, if the NFL cares about safety this rule should be addressed also. It would be a big time rule shift though. It would totally neuter the zbs.
With the number of teams that run the zbs, I dont know if the rule would pass a vote by the teams. Dunno if 2/3 would ratify the change. Being a fan of a team that doesn't chop much, and generally wraps up and tackles, I'm in favor of the change.
Wait for it... Wait for it...
"If I could start my life all over again, I would be a professional football player, and you damn well better believe I would be a Pittsburgh Steeler." Jack Lambert, 1990 HoF Introduction.