How is O'Day seeing a 16-team Big Sky? There aren't that many western FB schools (FBS or FCS). And there aren't that many "DU" (BB only) schools in the west either.
If Utah goes Pac-10 and LaTech goes for better geography I see 30 western FB schools in the equation he's talking about:
MWC: USAFA, BYU, CSU, UNM, SDSU, TCU, UNLV, Wyo
WAC: BSU, FSU, Hawaii, Idaho, Nevada, NMSU, SJSU, USU
BSC: Sac, EWU, Mont, MSU, Weber, NAZ, NoColo, ISU, PSU
Great West: Poly, Davis, SUU, UND, USD
If the MWC would decide to go for 14 to 16 teams there aren't that many left for O'Day's "14 to 16 team" BSC unless it were merged into a two-tiered (FBS/FCS) WAC.