The problem with the flexbone ( like ga tech runs ) is not the X's and O's, it's the jimmies and Joe's. The offense is sound, but enough talented kids on both sides of the ball don't want to come to a team that runs the ball 80% of the time. Notice I said on both sides of the ball. The NFL, and all money making forms of pro football, utilize the pass game. Offensively and defensively, as a recruit, you want to mature in the throw game. Exploiting it and defending it.
What we would see at UT if we went to this offense is a mass reduction of good talent on offense and defense over time. Once we ran into teams well versed in containing the flexbone ( which, eventually most of our sec opponents would become ), and with equal to superior talent, we would struggle to win.
IMO, this would be a mistake.
The Nebraska option is/was not the flexbone. They ran little triple option. Nebraska football under Osborne in the 90's was first and foremost a power rushing attack ( under center, I form, and two te sets ), and once they proved to you they could consistently gain 3.5 yards per Carry with the power run game, and got you run blitzing to stop them, they hit you with the spd and load option and out numbered the defense on the perimeter. I would rather go to the nebraska style power run game, with option sprinkled in off that power run game, than to go to the flexbone, but that is just my preference ( mainly because it is safer to run. The flexbone suffers from a need of excellent timing and the QB has to be seasoned to read where to go with the ball every single play, whereas with the Nebraska option the majority of the time the QB is turning around and handing the ball off. Spd and load option were only used around 20 to 30 percent of the time, and, obviously the QB had to make good post snap reads on those plays ). Now, we would have to be able to somehow find very talented offensive linemen to execute this offense ( for this offense suffers from the same problem as the flexbone in that you rarely pass the ball just as nebraska minimally passed the ball ) which I suspect we would have to find this talent in state. Really talented off linemen wouldn't want to come here to predominantly run block, but, you have a better chance of snagging really talented off linemen if they grew up on UT football. Also, on defense we would have to benefit primarily on in state talent because the majority of talented defenders would want to practice against an offense that utilizes more throw game principles.
Like I said, same recruiting/talent problems as the flexbone, but a much safer offense to run as far as turnovers. And penalties, now that I think about it