Mario would absolutely kill it at Miami, in my opinion. He turned a finesse Oregon team into a bully in a few years in a place where it's really hard to get big players like that. If he can do that there, he would definitely do it here.
Plus, all the skill players would be easy as **** to get at Miami and they'd all want to play there once they saw the monsters they'd be playing behind, making their jobs easier.
He may not be a perfect gameday coach, but he's way better than Manny. Either way, the style of play he's going for (bullying teams+spread offense) leaves a much larger margin for error week to week than what we have with Manny.