Copied this off the CUSA board:
McMurphy wrote an article just today with industry sources explaining why the MWC stopped at 10. Here you go:
"An industry source told CBSSports.com Monday the additions of San Jose State and Utah State to the MWC were "probable, but not 'done' as of right now."
If San Jose State and Utah State are added, as expected, it would give the Mountain West 10 members in 2013, but don't expect the league to add any more schools -- at least not any time soon.
The reason is the league is holding out for the possibility that Boise State and San Diego State might reverse course from their decision to leave for the Big East and remain in the Mountain West.
"There will be no more teams added to the Mountain West until the Big East [media rights] deal is consummated this fall," an industry source told CBSSports.com. "They'll want to see what Boise State and San Diego State will do and if they stay with Big East, then the Mountain West can explore whether they want to add more teams later."