It's a real conundrum...

EITHER the coaches are not putting the players in the best possible position to succeed/using them to the best of their abilities (which is more the side I come down on) OR the players are just not good (which I do think some of them are pretty overrated just because they are the vaunted "first round draft picks")...

Things I see that make me think scheme:
Too many instances where, in the formation, there is a wide gap between defenders. No one from the second level comes in to fill that gap at the snap or during the play, and the opponent has a free run through that gap and gains 5+ (or scores) before there's even a defender near the ball.

Also, there was a 3rd and 3 play where DET completed an easy pass for a 1st down. The only person who had a chance to cover the back coming out of the flat was Walker, but from where he was lined up, there was NO WAY he could possibly get over there. Was it a mistake by Walker (i.e., he wasn't supposed to be lined up there or was late in starting to move toward the back in the flat)? Or was it designed that way? If so, it was poor play design - the play, as it happened, had no chance of stopping that pass in the flat from picking up the first down. It's almost like they invite the offense to take that short pass. Which would be fine if it was 3rd and 10+. But this was on 3rd and 3 - it was like the defense was saying "HERE, TAKE THIS FREE FIRST DOWN!!!"

I just see too many of those kinds of things - plays that just have no chance, and you can see that they have no chance from the moment they're lined up - even before the ball is snapped.

Also, not that it means much, but I've read where Washington and Detroit fans (Barry's two last stops as DC) were literally laughing their heads off at the fact GB hired him as DC... that, plus his track record of piss-poor defenses everywhere he was ever a DC, immediately makes me think "very poor hire".