re: Realistically, how often should a Football Program like LSU win a Championship?

Historically speaking that's damn good. The problem is for one the steady decline from contending for a division crown to fighting for a 3-4th place finish. Second it's the stagnant offense every year. Miles hasn't adapted and he should have recognized what the program needs and that's a good offensive product on the field. Miles has won a lot he recruits well and reps the program and state well. Imo he should've promoted change if not schematically then just more balance and creativity and he shouldn't have allowed Harris to have the starting job gift wrapped. With the offensive woes last season I I ya gotta reopen the competition and play both qbs in live action like many coaches did.