To find out more about how the school's network could influence conference realignment, we called them up to find out.
Typically, when discussing BYU discussed in a conference expansion scenario, it's joined by two accompanying "buts", as in "BYU is a capable athletic department BUT, there's Sunday play." Or, "BYU would make a lot of sense, BUT, there's BYUtv to deal with."
The issues surrounding Sunday play have been written about several times, both on this website and elsewhere. For a reader interested in what that policy actually entails, and it what it means for say, the Big 12 (or any other conference), details have not been hard to find.