Personally I don't see that criticism. I think he already landed a big fish in Mike Sherman. I have no problem with the three coaches he was able to retain from the last staff. In fact I think it's kind of a feather in his cap that he was able to convince Kacy Rodgers to stay on.
I thought under Dan Campbell, Anthony Fasano arguably played the best he's ever played, maybe not from a production standpoint but from watching what he was doing on the field I thought he took the most strides this year, and of course I think we were all intrigued with how Charles Clay came along once the coaches took their heads out of their butts a little and let him play and be coached like a Tight End instead of a fullback.
Jeff Nixon did something I never thought possible. He turned Reggie Bush into an every down runner, and by the end even got him running well between the tackles. That's a feather in his cap. I guarantee the rest of the league didn't think Reggie had that in him.
George Edwards is a good Linebackers Coach get, IMO. I don't know that he needed to be a DC in Buffalo but I think he's a good LBs Coach, pretty well respected around the league.
And as I've said before, for Kevin Coyle to get the kind of production out of that group in Cincinnati over the years...pretty good. I think Coyle is an average Defensive Coordinator hire. He might be bad, he might be good, but at least you can look at how his units have performed and actually sit down and say, I see why he's being promoted. He's in line for that promotion.
I think Mike Sherman is a way above average hire, IMO.