I'm not claiming Herman is Saban 2.0, and I am not saying he will suck. No one knows for sure, even Tom Herman himself.
I am 95% sure Herman will land somewhere between Mack and Charlie. If Herman has a 10 year run like Mack did, you guys should be super excited. Texas has had 3 great coaches: Bible, Royal and Brown - and around 25 other meh coaches. They have had a ton of Strongs, McWilliams, Mackovics, Akers, and other forgettable guys. I just can not for the life of me understand why some of you guys hate Mack. The fact he isn't considered a legend in Austin is beyond me. He is comparable to Bob Stoops, Jim Tressel, Steve Spurrier, Lou Holtz or Phil Fulmer. He wasn't Nick Saban, Bobby Bowden, Urban Meyers, or Bear Bryant - but he was in the tier just below these guys. He was really, really good.
Whereas Charlie's teams scored 7 points and netted 59 yards of offense in bowls over his 3 years. He was historically bad. He was producing Iowa State results with Texas resources.
I was dumb enough to think he would hang around another year, due to PC BS. Boy was I disappointed.