When I take the blue goggles off I am still not sure how much it helps them to bring in BYU and SDSU/CSU/UNLV/UCF/Cinci. There aren't many great options remaining other than BYU as far as I can tell.
It would probably help them about as much as the Utah/CU expansion helped the P12 - Expand the market a little bit, but not raise the profile of the conference at all. I still am hoping something happens in our favor, but B12 could easily just go East and completely ignore BYU.