I was more surprised that they are waiting a year to begin their transition. I'd figure that the WAC would want them joining as soon as possible. They need schools as soon as possible.
I know seriously. Why wait one more year rather than allowing them to join for next season to begin? For the WAC to secure being poached (if possible), it would need at least 2-4 more schools, in case that schools like Chicago St. or UMCK or New Mexico St. or any other school within its current membership to join other suitable leagues within Division I.
Such possibilities for expansion candidates could be like UC-San Diego (although its aim of interest is the Big West) or Metro St. (Col.) or UC-Colrado Springs or CSU-Pueblo or any school from the UCal system or the Cal St U. system (like those in the CCAA). The thing is that almost neither have the funds nor the support to invest or step up, regardless if any of those schools are successful or not in any certain sport.