I hear you. Thats pretty much where Im coming from much of the time. But then, other times, I think putting them in the Big 10 would make sense.
I think when I do start a dynasty, Ill convert the Big 12 to the Big 10 and then make the Pac 10, the Big 10. Essentially, I would make the Big 10 have 12 teams, the Pac 10 have 11 teams, and then make the Big 12 have 10 teams.