So I would be in favor of them joining. Their football team is consistently one of the worst in FBS. We should ask them if they're interested in dropping football down to the WAC or FCS and joining the WCC.
Las Vegas is a 4 hr drive from LA, 5 from Malibu or SD, and 5 1/2 from Provo. It's a very short flight or 9 hour drive from the Bay Area schools.
Their basketball brand would raise the prestige of the conference, similar to BYU. It would bridge the geographic footprint between the old WCC and BYU/possibly Air Force.