Dan Quinn has never not been a wonderful coordinator, and Micah had some questions coming out. Not sure he would've instantly put it together elsewhere like he did with Quinn.
I think our bar for success might be a tad bit high if we're negging guys like Quinn for not being the undeniable best in the world. He's a worthy part of any tree, and better than quite a few names on that Walsh tree.
For me, any coach who can go out and coach multiple good to great defenses, churning them out yearly while also updating his scheme, is a stud. He did make a Super Bowl. Most head coaches never do, and he did right away, even if it did end in a hurtful fashion. Atlanta hasn't sniffed much of any success without him. Hard org to win with.