If he could do it with all of his faults, quirks and shortcomings, then it's pretty apparent that there would be others that could be mediocre as well. How hard is it to go 8-5 when half your schedule is made up of MWC and former WAC teams with an FBS opponent here and there?
If you look at BYU coaches over the past 40 yrs we hit the jackpot with one, struggled with another and did so-so with the 3rd. It's not like we swing and miss every time out when trying to find a new coach. Replacing Bronco won't be that hard and it has a 2:1 chance of being mediocre to great. Dems ain't bad odds