If this is placed in as a new rule in the NFL then this could effect us the most due to the high volume of creative running schemes we run. If anyone can recall, alot of our toss/sweeps we ran last year our lead blockers (TE/RB) made a living on chop blocks... by removing an opposing front 7 defender completely allowed our backs to adjust to up the field tacklers and giving better wiggle room for extra yards. If our halfbacks or tightends are not able to bring down any front 7 defender at any time this could subdue our potency on the running plays.
In all I understand the danger on chopping the legs on opposing players who are not able to defend themselves, and there needs to be a limit to when and how this kind of action can be used, I just hope this doesn't go to far and ultimately remove chop blocks... I mean whats next, they going to tell linemen to stop pancaking bc of the damage there doing to the opposing player tokus.