I credit McCoy's flexibility in being able to adapt to his players and change the offense accordingly
I also think he does scheme up some good plays
But it seems like once we took the reigns off Peyton earlier in the year and just him audible at the line on almost every play that our offense improved quite a bit
Unlike Allen, he has been a coordinator for a while. So I think he has a better shot at success.
He should probably leave the playcalling to his OC if he gets a HC though.