on wrong end of tiebreaker doesn't mean the conference as a whole wants to revert to two strict divisions.
Some years BYU will be on favorable end of the tiebreakers.
Perhaps they could tweak the lower rungs of the tiebreaker rules, but I doubt this season is going to cause the Big 12 to change to strict divisions anytime soon
The announcing of conference opponents for this season and next 3 seasons was a decision that they are sticking with this way (no divisions) at least for first 4 years of the 16 team conference