Exactly. People bitch about Diaco's defense, but even with his inability to disguise blitzes, it was incredibly effective at many points this season and obviously all of 2012.
Diaco was borderline moronic with how he attacked option teams like Navy, but there was absolutely a method to his madness against other teams... and his scheme was downright dominant against your typical "prostyle" attack that didn't feature a dynamic mobile QB. Everyone wants a more aggressive defense causing turnovers and getting sacks, but after week 2 where Michigan inevitably hits some big plays because a CB was left on an island people will be screaming bloody murder "where was the safety help!?!?"