Kirby Smart's another coordinator, and that's all I know about him. Wouldn't we be reticent about hiring another first time head coach?
A few names that I would've liked to see, had we made the change last year, would have been Jim Tressel, Chris Peterson and James Franklin. Yeah, it's easy to say "X would never have been interested", but we do not know that. It's up to the AD to court the coach and while this coach or that coach may have other dream schools, Nebraska is an objectively strong opportunity.
Tressel is still in play. For another name, how about Mississippi State's Dan Mullen? He's young (41), energetic, and stuck at a program like MSU. Not saying he's the best coaching prospect out there, just tossing out one of maybe five names I know. Can't see Moglia getting a shot here. That'd be certainly interesting, though.
To piggyback what NUpolo said, I think the criteria should be someone who will max effort recruit to the program, represent us well at all times, and build the brand. Big winners and elite coaches are rare, period, but as long as we are going through coaches that fit that criteria, I don't think we'll ever have too much to regret.
/wait, why are we talking about other coaches again?....gonna have to go back and read. haha.