I will admit, that I have in the past said that I did not like to see Williams use that tackling technique.
But overall, I don't think this rule change will make that big of a deal.
I don't watch a lot of games other than the Cowboys, so Roy Williams is the only player that I saw that would look to use that technique.
IMO, Williams is a great tackler and will have no problem adjusting.
It does not look to be that big of a problem around the league. I think the league mandate on pass interference last year was a much bigger problem for the defensive players.