I think the MWC -BYU/Utah, +Fresno/Boise is still pretty clearly a stronger conference. I'd say that even with an intact CUSA, but the reality is that the CUSA is likely to lose teams, too. Really, the MWC football quality will be about the same, although the mtn. will probably dissolve without the Utah schools. The league would probably have to rework its TV deal back to a ESPN off night model to maintain revenue.
It's not an ideal scenario for us, but one that is only a small step back from the current situation. The MWC would still be knocking and with a weakened Big East (and possibly Big 12 and ACC) the MWC could join those in that "middle class" niche that appears to be developing (with the SEC, Big 10, and PAC-10 being the "upper class"). The CUSA is likely to still be on the outside looking in and possibly even in a weaker situation.