Zimmer would be awesome. Jerry would love it and I'm sure Mike knows him at least somewhat from being a division rival for years.
I also think it's funny when people talk about him being a bad HC. That franchise was going nowhere before he got there. He at least improved them greatly. That year they lost the playoff game when the FG kicker missed a chippy in the freezing cold was a great coaching job.
Too many people seem to think if you aren't a HOFer as a coach, you suck.
Anyway, the only negative I can see about this is that Zim is such a Jerry friend. Might be a bad look in the locker room and for Mike. We don't need anymore Wade/Garrett situations where everyone knows the Jerry crony is waiting in the wings.