I'm not sure which thread we're supposed to talk Bama in, but it appears that while Bama might have been hoping that Simpson would take the job, he's struggled and hasn't done enough to win the job. They apparently gave true freshman Dylan Longergan (over Eli Holstein, surprisingly) some reps with the first team this week to see if he'd catch on, but it appears that it's trending towards Milroe winning the job, at least early in the season
There's a decent chance we see a running game featuring a running QB to give them a +1 running constraint, with an RPO passing game tacked on to make it simple and hopefully give Milroe easy throws.
Against our two deep quarters defense, it's unlikely they'd break many explosive plays, but with the +1 in the run game, they'd probably be able to get positive yardage and move the ball some, but what happens when they eventually run into negative plays or incompletes? How many long drives can they sustain? How many times can Milroe run it? This scenario is where Catalon is important. He's elite at triggering from depth in the run game.
While Milroe is a good runner, I don't think he's a special one, and he was turnover prone last year
I think this approach makes sense if Simpson and the freshmen aren't ready yet. Run Milroe and Buckner a lot early in the season to give your offense some floor until one of the others is ready to take over to give your offense some ceiling