Consider just the one rule change in intentional grounding. Watch a few games this weekend and I am certain you will see 3 or 4 instances in every game of the ball being airmailed towards no one in particular without penalty. The QB having total freedom to throw whenever he is outside the tackles. Ten or 12 years ago, all those plays would have been sacks, hurried throws likely to be intercepted, or intentional grounding fouls. I realize all this is for qb safety considerations, but you are right, the defensive players HAVE TO PLAY WITH LESS INTENSITY, or risk roughing, targetting, ejections, etc. Things are skewed to the offense. Ohio State is about to score 50 in five straight game for the first time since 1903.