As much as everyone seems to throw Brady Hoke under the bus, he is a legitimate candidate for the hypothetical coaching vacancy.
In 2008, he took bottom-dweller Ball State to an undefeated MAC record and national ranking
In 2010, he turned around a mediocre San Diego State team into a solid season including a bowl win with completely understandable and close losses to TCU, Utah, and Mizzou.
In 2011, he would unite the fractured fan base which has created huge program perception problems.
Although Harbaugh is clearly the #1 option, I think there are too many influential alumni/former players who would not support any candidate without ties to the Bo-tree. This vaults Hoke over the Randy Shannons of the world.