Proven coaches are hard to come by anywhere, especially at dumpster fire programs like UF and UT last year. I mean even Mullen who spent 9 years at MSU and won NC with Tebow as OC is not really that proven. He has a losing record in the SEC and poor record against ranked teams. We had to pay 6.1 million a year just to get him. We maybe in a similar camp by the end of this season, but the win in Neyland certainly helps his cause. Not expecting a win tomorrow at Starkville, but if he pulls it off, then he would have done something that Spurrier didn't do.
Now let us look at other "Proven coaches" and how they are doing. Frost: 0-3. Chip Kelly 0-3. Taggert is 2-2 and is an absolute joke. Harabaugh got beat by ND in his first game, and played 3 terrible teams after that, so I am not sure he is showing "significant success" there. At least you guys are winning your cupcakes I guess.
I think no matter what the hire is, you have to roll the dice. I just don't think Pruitt is the answer, mainly because of what I have seen from him so far, and mainly because we have grown so tired of trying to imitate Alabama and hiring coaches from the Saban tree with our last two busts. Saban is 13-0 against his former assistant coaches for a reason. Even Kirby is still unproven to me. With the talent he is getting, he should get a natty this year or next year. He seems to be chocking at the big stage.
Regardless, you guys are stuck with Pruitt for probably 3 years at least unless he commits some drastic error. So hold your horses and hope for the best.