The Big West opened its arms to the Hawaii situation because Hawaii is a higher profile school. Portland State is not, and the Big West (outside Hawaii) is a comfortable cabal of California colleges. They don't want to expand their travel costs. They're not going to get big money for athletics anyway.
I've speculated elsewhere that the Big Sky believes Idaho to be a similarly higher profile school, so Doug Fullerton reeks of desperation by letting them in without football. For all I know, maybe he has to. So I hypothesized that the Big Sky would push out Portland State if football is dropped. I could be wrong. It may- or may not- help if I'm wrong.
What I experienced last year: It costs $400 to RT to Grand Forks or Fargo... FROM MINNEAPOLIS. North Dakota is a budget killer in this conference. Ever try to fly to Montana? It's surprisingly expensive compared to most locations. Try getting to Cedar City (they may fly through Las Vegas for that, though). Cal Poly (football only)... well, I wonder if PSU flies into Santa Barbara.
Whereas...
Cal State Bakersfield (via Burbank or maybe Fresno)
Chicago State (OK, not that cheap)
Grand Canyon (in Phoenix, there's good deals)
Missouri- Kansas City (cheaper than Chicago, sometimes some good deals, but certainly a bit of a haul)
New Mexico State (El Paso is no picnic to reach, but Southwest goes direct to Albuquerque)
Seattle University (Hallejulah!)
Texas-Pan American, about to be renamed to Texas-Rio Grande Valley (connect via Houston or Dallas)
Utah Valley (In Provo's suburb, so via SLC... still a much better haul than Cedar City, almost as good as Ogden)
Recruiting-wise, there's a decent slate of urban areas involved with this conference. Regular trips to Chicago, Kansas City, or the mouth of the Rio Grande? At least none of those are North Dakota.
It's still a value judgment, I suppose.