Don't get me wrong I am not arguing that the MWC is stronger at all - only that it is far more stable. I also do like CSU's position in all this. For the same reasons you think the Mack10 could come calling - I think the Pac12 could do the same. With 45,000 alum in Denver the Pac-12 may want to lock down Colorado all together and not have to worry about another conference in their back yard.
Maybe, but the Pac10 has a lot more options that they would pursue prior to CSU IMO