I'll say again that Harbaugh is better suited for the NFL. Just my opinion. If he goes to Michigan, I don't think that's a good fit and he'll fail. I think there's also unneeded pressure at Michigan.
It's crazy because, while this is a "home run" hire, it's also got a lot of Hindenburg potential. And there's almost no chance that Harbaugh is there past maybe 5-7 years.
In discussing who'd be best for ND if Kelly left, it was discussed whether Harbaugh would be a good fit. Some said "absolutely," others said "hell no." Those in the "absolutely" camp said "look at what he did at Stanford" and those in the "hell no" camp said "look how badly San Francisco wanted to force out a coach that averaged 12-4 seasons and never did worse than make the NFC title game." And that's true, San Francisco wanted him out this past offseason and tried to trade him and it was reported before a down of football was played this year that Harbaugh wouldn't be back next year.
Sooo... both camps have polar opposite views... and both have logical points to back it up. Here's how I evaluate Harbaugh:
Identity - A. He's not married to a specific scheme, but his teams always seem to understand what they are and he knows how to shape his teams to fit his pieces.
Recruiting: Prospect Selection - A+. Found tons of elite players that no one else thought were any good at all, and also cherry picked some higher ranked guys that he felt fit what he was looking for and was rarely wrong. Little-to-no off the field trouble or attrition.
Recruiting: Salesman/Hustle - C. He doesn't like the grind, but any big time school can basically sell itself if you win, and he usually gets a good recruiting support staff in place to do the legwork.
Player Development - A+.
Game Management - B. Seems above average but not spectacular. No huge blunders that I can remember.
Stability - F. Could bolt Michigan for a good NFL opening, is a powder keg, and everyone
hates working with him. His players turned on him despite wins because of his antics. Also literally rubbed a players blood all over his face. Guy is a psychopath.
So basically you'll get a program that stocks itself with good talent and plays hard, disciplined football. That should win 10 games a year in the Big Ten. But he could also flame out at any given time, and he's not going to really "out scheme" anyone. I don't see how someone like Dan Mullen wouldn't be an objectively better choice for substantially less money.