Third time I have posted this in 24 hours, but that was over 1,000 posts ago. The longer post details why without UO or UW, only 2 teams add up. But with UO or UW, then you can make 4 work with the prorata. Although at this point, maybe 50/50 on ASU vs UW vs UConn for a potential 4th spot.
TLDR; I think the two most likely outcomes are:
1) Colorado and Arizona only
OR
2) Colorado, Oregon, Arizona, and #4
For the 4th team ASU is my guess. UW will wait for B1G. Utah is being a-holes, plus a 2nd team from Arizona (pop 7.5M) makes a lot more sense than a 2nd team from Utah (pop 3M)).