I've said from day one.
BYU as a football only invite makes sense. Asking a P5 Conference to accomodate non-Sunday issues in all non-football sports isn't going to happen IMO.
Hoops can make it in the WCC following the Gonzaga model and "if" BYU was a football only BIG12, some kind of annual hoops scheduling agreement could help bolster the annual RPI and provide some marque games in the MC.
BYU makes total sense as a football invitee IMO.