Harbaugh will roll with what he has. At SF he had a QB who broke a NFL record for most rushing yards. Luck ran for over 800 yards in one season at Stanford. The problem UM has had the last couple years is the talent at O line just was not there. UM graduated three seniors and not one was drafted. If you do not have a good line does not matter what your rushing concept is if up against an elite team.
Not saying he isn't a good coach but in SF what happened when the defenses adapted to Kap? Stanford was about the most hard nosed football any PAC 12 team was running that I remember. He did make it work really well however.
I agree he is trying to build a certain way and that is smash mouth football for the most part at Michigan. You didn't see any big adjustments that I remember against OSU or FSU when they were controlling that run game where he all at once had these exotic pass routes all over the place. It just seemed he threw it more against FSU because the run game wasn't being that effective.
I give him credit for being a top coach but I still think he has a certain mindset offensively especially at these last 2 college stops.