The system isn't going to change dramatically, so the only way BYU can keep up is to get in the Big 12. I don't see any other P5 conference who would invite BYU.
I'm hoping the 13th game against a really good opponent separates the B1G, Pac, SEC, and ACC from the B12 . . . which could make the B12 consider adding two more teams and staging a CCG at AT&T Stadium.
Again, not holding my breath. (I just really want in the B12.)