I'm not sure Muschamp is ready to be a head coach at a big name school. He probably knows it too. He's not far from being ready, but he is still young and kind of emotional. I think he needs another season or two under Tuberville and then he'll be ready for being head coach at Arkansas, West Virginia, or Tennessee type of program. I get the impression he wants to take over at an established SEC-type program instead of building a program from scratch.
As of now, I don't think there are many Auburn fans who would find fault with Muschamp being named Tuberville's successor a la Fisher at FSU. However, I'm not sure how long Tuberville still wants to coach or how long Muschamp would wait.