If it was possible for New Mexico State to join CUSA. Would you be for it. In my opinion. It would be 100 times more beneficial than being an independent.
I'll lay out the scenario that could easily happen.
Hawaii announces that they are dropping Football, and moving down. Mountain West contacts UTEP about joining. UTEP accepts all sports completely.
Conf USA then contacts New Mexico State, and wants to add them same day that UTEP leaves. But, all sports not just football.
Personally I don't see a losing situation for New Mexico State if this were to happen. You would have several conference games much closer than the sunbelt. Rice, UTSA, and North Texas. Right now Idaho, and Texas State are the closest to New Mexico State.