I'm not worried about Banks.
Flame the **** out of me again if you want to. I don't think "good defense when defensive line plays good, bad defense when defensive line plays bad" is some unbelievable bar in the defensive coordinator market.
In four years I can't think of one game the defense as a whole seemed to grade out better than the Dline unit. Yes, I know winning up front is critical. But it's actually not impossible for the backend to hold up when the QB has time, and I don't know if we've seen that once with our former DB coach defensive coordinator.
Nonetheless, I'm in the minority with this opinion, so I'm surprised he's looking at lateral moves and not a lower level HC job.