A very welcomed addition; the mechanic and the factoring of speed. As someone who controls the middle linebacker the guards climb too fast and there's never been any recourse of way to combat it even if I read fast and take on the block right now even when controlling a guy like a Bobby Wagner. Hopefully now I'll be able to stone a guy properly.
I know nickel wasn't mentioned but it is technically still a sub defense. I hope the ability to stop the run from Nickel isn't neutered. It can already be a little perrilous from nickel normal vs. inside zone run as it is.