Okay, so let Nagy do what he does best -- locker room cheerleader. And let the OC run the offense and the DC run the defense!
I know, right? That's what a head coach is supposed to do. As head coach, he needs to manage his players personalities and eke every last bit out of them. Choose who plays, punish those who are slacking or screwing up on the field. Be the bad guy when necessary, but make up stuff like Club Dub to reward the players too. Advocate to the GM what you need to succeed. Provide a top down level of game planning, like team identity and choose the right coordinators to get that done.
But once those choices have been made, let the coordinators do their job. He doesn't step all over Pagano and call plays for him. I don't know why head coaches get this stick up their butts about calling plays from their specific discipline. You want to do that, stay a coordinator.
The biggest difference I think I see in the offense is, and I know I'm gonna describe this poorly, is it feels like there's a rhythm, a balance. Like a whole game is being planned out and being adjusted to what's working. When Nagy was calling plays, it was like me picking plays in Madden. I just call whatever and hope it works. Or better yet, Ron Turner and his pick a play that no one would expect nonsense kind of game calling.
The offense has had way better tempo last few weeks for sure. How many times earlier in the year did we see momentum getting broken by slow play calls, false starts, timeouts, and delay of game penalties?