The team loses Eberflus and Bisaccia at linebackers coach and special teams respectively, and Garrett thinks he can just 'get by' with promoting Bloom and O'Quinn to fill in.
How did that work out?
The fact is that along with gameday coaching, his biggest weakness was that he had absolutely no idea how to hire a coaching staff. He never did, and he never will. Every decision he ever made on his assistant coaches was a terrible one, and the few he did manage to get were typically suggested by someone else he hire. Eberflus came in with Ryan if you remember. Garrett's decisionmaking brought us the Monte Kiffin era and Paul Alexander as offensive line coach, after he drove a guy like Bill Callahan away.
Have I told you lately how ecstatic I am that Garrett is gone?