Still waiting on the specifics, but as indicated in this and other threads, Boise St. has asked the Big East for assistance in getting it's non-football sports into "another conference"...with that other conference being the Big West.
This is part fo what I addressed a week or two ago about negotiations and how just because the Big West passed on Boise St. last time, doesn't mean they will now. But this time, the Big West still in a position of power and with Boise St. lacking the safety of the WAC comfort, it means Boise St. has to GIVE more and negotiate, versus their initial offer of "we want in, please take us".
While nothing is on paper yet, I would assume that this "help" that Boise St. seeks, if needed, will be something as simple as the Big East agreeing to a few OOC Big West games each year. That said, it seems like a given that SDSU and if joining, Boise St., would get some Big East OOC games anyways. But if the Big East could offer even just 4 OOC games to Big West schools, then it could be a win.
Goal for the Big West now is to become good enough to be a regular 2 bid conference. For that to happen, I'm guessing it will need to start with SDSU losing the Big West championship their first game but getting an at-large bid.
IF Boise St. can get in, it will be trouble for the WAC, that's for sure. All of a sudden, they'd have 4 members, and would NEED Utah Valley, CSU-Bakerfield, UTPA AND Chicago St. to join to get to a stable 8...still knowing they risk UTPA leaving for the Southland.
Big West could always try to make sense of a Boise St. addition with an Idaho one too, as a travel partner, but it's doubtful Idaho has enough loot to give the Big West for the Big West to even consider that. Poor Idaho