It's true, a top 4 of a real western conference based on size of fanbases would be Oregon, UW, Utah, and BYU.
A complete bursting of the TV
bubble would give Utah and/or BYU the excuse they need to go beg the B1G, after which the national conference thing is already out of the bag and it would make too much sense if you're getting them for nothing. A B1G division of those 6 schools would feel a lot like the old Pac 12.
A complete bursting of the TV