Honestly I cannot say. Everything when it comes to hiring seems to be nothing but an argument. I am not educated enough in coaching hiring field to say. I hear what everyone else says, Brady, Lashlee, etc... It curious with coaches though, just like players they can excel beyond your expectations or fall well below them.
I think the offensive talent was good, consistency sucked, penalties galore, play calling at times was like "what the hell". I think more than anything they need someone who can mix it up, be creative, and have a great feel for the game so the right plays can be called. Of course fundamentals are the foundation for success, IMO.
Everyone can identify the problems but who truly knows how to solve it? I defer to TH on this but the hire should be someone who has the credentials to run the offense and not a coach that has been fired because he has not produced. I do think that Herman wants to have an OC that can build upon the pro spread that Texas already runs, which to me likely means it will be a college coach and not an NFL one. In his press conference he said that it could take a while for the hire because of the bowl games that these coaches are in. He does not mention waiting for the the NFL playoffs to end. That might be a clue.
With TH job future being on the line I have to think it will be a hire that leaves most Texas fans yelling "Hell Yeah".