I defer to others on Xs and Os, but this idea that the scheme needs to change strikes me as somewhat odd. We've never looked as bad as we did Saturday, either this year or ever during Diaz's tenure here. If opposing offenses were constantly out-scheming us, that's one thing. But that's not been the case. The insinuation is that UNC cracked the code and now we need to change the D. But it couldn't have been that easy, otherwise every team would have done it and that hasn't been the case.
That said, I do think Diaz needs to fire Blake and he needs to find someone with a different approach to infuse different ideas, methods, etc. That's always a plus (for any organization). But I'm struggling to grasp that there's a fundamental scheme problem (as there was when we were pursuing pro style in comparison to a more modern offense).