Gonna ramble a bit, hopefully it comes to a point. We're running a quarters defense. From what I understand it helps to involve ALL players in stopping the run game. I don't know how much the DB's have been contributing in stopping the run game. If someone has a stat breakdown on where the DB's are getting their tackles, I would like to see them. Bump and run coverage is counter to involving DB's in the run game (at least by my opinion), because the DB is placing himself to be blocked if it were a run. The safeties are playing up, giving you hypothetical or actual "more players in the box". The weakness shows up in pass protection (captain obvious). Banker is on record that he wants to run the base defense most of the time. Now, I don't know if we're running the base defense most or any of the time. But, I took his statement as a "one size fits all" type declaration. We need to run packages scheme wise and personnel wise to do better against the pass.
(IF you are a "post is too long" whiner, than you can quit at this point as the rest is just window dressing)
Not that I have compendium of research, but from what I've ever seen, a defense is in trouble when the DB's account for a large portion of the tackles. And so far this year, the DB's are accounting for a bunch (BTW, I stopped after the top 25 in the list below). The data is "clouded" though, because opposing teams have COMPLETED more passes than they have run the ball. I don't have the
season average stats in front of me, but seems like opposing teams have completed around 26 passes per game. Subtracting out sacks, opposing teams have run the ball around 24 times per game. Teams have COMPLETED more passes than they are running the ball against us.
So, are the DB's really helping to make a good run defense, or are they mostly an unused allocation that would be better used in pass defense? I don't know the answer to that question (at least the "unused allocation" part). Also, before anybody wants to run tangent and extreme with this, I'm not suggesting that a CB is ever given run stopping as their primary or ultimate responsibility.
Do we need two good players at each level on defense. I don't know, but definitely the more the merrier. I do know that "one size doesn't fit all" when it comes to defense. I do know that holding a team to 18 yards rushing is great, but holding a team to 80 yards rushing is also great especially if it means our pass defense is better than atrocious.
Is it a talent problem, a problem with the players, or Banker's problem. Banker is the DC, no matter how you slice it, it's Banker's problem. It becomes Riley's problem if Banker can't fix it.