I keep seeing everyone talk about wanting Herman... As someone who has lived the Herman roller coaster, I would stay as far away as possible.
First, lets talk about the elephant in the room. His hubris and how he seems to struggle with personal interactions with other people is absolutely grating on those around him. It got to the point that when players would see him in the hallways they would stop saying "Hi" to him due to how he treats people. His personal skills were so bad that the University brought in an etiquette coach for him. Remember him flipping off the camera during signing day? Or mocking the Missouri QB from the sidelines? Those types of things were much more prevalent inside the program than known to the outside.
Second, his staff and his unwillingness to listen to outside voices more than anything led to his downfall. Herman essentially brought his whole staff from UH with him. The issue there is that they were not qualified to deal with the step up in competition and the expectations of what it means to be involved coaching at a state flagship university. Part of the blame for this should be put at the feet of the AD, which was an interem at the time, but Herman only wanted "Yes" men on his staff and was extremely resistant to change. It is a shame because he had the same financial resources that Texas gave Sark, but the quality of the staff is night and day different. He doesnt have the contacts and was unwilling to hire outside of his comfort zone (until essentialy forced to last off-season). Maybe he changed his mind, but then again are you willing to take that risk.
Third, he is reliant his offense ran his way, regardless of the talent around him. Get ready to lots of QB power and eventually a beatup QB. He is risk adverse and will "turtle" after getting up 2 scores on any team. Offense goes into a shell and the defense eventually gets exhausted. This means lots of teams that should be blown out will then be close at the end. There is a reason he is involved in so many one score games, it is a design characterstic of how me manages games. This is great when utilizing this approach when dealing with a superior team (which tends to reflect in his number of upsets of higher ranked teams) but allows weaker teams to have a punchers chance at the end. This leads to perception issues regarding the overall skill level of the team, team toughness, and it eventually bleeds into recruiting.
Fourth, he hasn't learned to let his coaches coach. His play calling is predictable and when forced to bring in Yourich as an OC he continued to meddle in the O. You can tell when Tom starts calling plays vs when he let the OC do it. He is a WR coach at heart and continued to meddle in the WR room (both in recruiting and in the rotation) to the detriment of the position. He plays favorites and had a very difficult time of consistently having the best players on the field. He does things to make a point, even if it hurts the teams chance of success on the field. He is very bad at allowing/doing in game adjustments and is a poor gameday/clock manager. His hardcore antics come off as fake and forced.
Five, there are rumors of other off the field skeletons (drinking, adultery, and substance abuse) that have all been used one way or another against Herman while he was at Texas. I wont get into this heavily, but there are stories out there that harken to pre-Bama Sark and Joey Freshwater image as well as some intersting interactions with boosters and Mrs Herman as well.
Lets put it as nicely as I can. When it had come to the point this season to begin discussion of should Texas begin to look for a new head coach, no one (AD, Admin, Boosters, Player Personnel) had his back. No one was in his corner, and if that is the case, there is no way you can survive at a major program. If you cannot build relationships and are toxic enough that you have no advocates, it is a major red flag.Maybe Turtle Tom has learned his lesson, but all of his actions on and off the field at Texas shows otherwise. Hire him at your own risk. Dont say people didn't warn you.