And also a lot of bad teams especially late in the year.
In a conference, that isn't an issue anymore. They get access to home and away games in conference, and good teams of interest. BYU's value goes way up in that scenario.
In other words, I think the deal BYU had with ESPN was probably reasonable and fair, and ultimately to BYU's benefit in exposure and flexibility as well as more $$$ than they could have had in the MWC/AAC/WAC