Sorry, a little country song running through my head...
No, I prefer big12 for one huge reason. I think BYU is more likely to pick up better recruits in b12 country. Lots of good Christian kids to choose from. I think it's possible that BYU would have a significant increase in good fb players if in b12.
Having lived in Texas I was surprised to find both strong anti mormon stuff and yet strong desires to be in good places. I think BYU could really start to appeal to parents that Provo is the place for their kids.
Also, More families in b12 country maybe? I mean, more of the athletes come from families vs west coast cities? Possibly.