re: Will Muschamp was head coach in waiting at Texas. Would he have done well as UT HC?

Let's see.

A certain Texas school with a prominent donor whose name rhymes with Mahomes, had said donor publicly say that, before their black coach even coached a game that he was "good enough to be a coordinator but not head coach material". They fired their coach after year 3.

That same school, the year after firing their head coach, had one of their graduates send a letter to the house of the head coach of another Texas school, who happened to be black. That letter contained racial slurs and the media immediately blamed that coach's school even though it was discovered later, as most of us knew would happen, that it was a member of the other school's alumni base that sent it.