There is no gain for any team to schedule BYU at this point in the season. Cincinnati won't schedule BYU now, they don't need BYU. BYU scheduling UCF only makes sense if BYU was ranked in the top 10... a win over UCF really does nothing for their position right now. Costal and Marshall have both told BYU no.
BYU's only chance to get a game on the 5th and 19th is to hope the PAC12 can give them a game, and I think the chance of that happening are slim to none.
The PAC12 is quite literally BYU's only chance at this point to get another game. And that is a risk for 2 reasons... we could spend the week prepping for USC and on Thursday told that USC isn't available but Washington State now is, leaving BYU no time to prep for WSU and then what do we do? Do we play the game still?