Its a combination of factors, which is what drives me crazy about this debate. Everyone wants the easy solution. "Its the scheme". Well its not that simple. The scheme in and of itself is perfectly adequate, IF you execute it properly, and you have the right personnel for it. IMO we do neither. Which is why we have the mess we do. Part of that is the coaches fault, and part of it is personnel we lack.
I honestly think that the coaches had NO confidence in our LBs and Safties this year, which led to the overly conservative scheming, especially up front. As our talent improves, I suspect they will get more aggressive. I dont think people really understand just how devastating the losses of EJ, Paul and Terry were to this defense. I mean our LB corps was basically decimated in one off season. Your LB corps is the backbone of your defense. Safety was also a mess this year. Our DL also left a lot to be desired.
So the answer is that its NOt just one thing. Its a combination of factors. Where the coaches DO deserve a ton of blame, is in continuing to force this defense while lacking the personnel to do so. I dont believe this defense CANNOT succeed, but it needs the right bodies OR the coaches need to adjust it to make the most of what we have. Last year was a major blunder in trying to force the issue.