I like this move. MM's decisions always felt rushed. Think about it: GB on offense, close play finishes, a red flag possible, gotta get a play in; what to call? throw flag or not? attention is not properly on each decision. And you know game planning has to be double hard as he had to worry about the offensive plan, yet oversee everything else.
When MM put his mind on defense, it improved and they finally did something different. Now, he gets a chance to have more oversight and a grasp of the bigger picture. And, he rewards those assistants who have shown they can teach and shown they can produce. How is this a bad thing? Yeah, we're unsure about Clements, but at least he, EB, and AVP are on staff and known vs. just bringing in a guy from outside.