If BYU wouldn't accept anything less than full home TV rights from that BSU/SDSU version of the Big East, then BYU certainly wouldn't accept anything less now from the current BSU/SDSU version of the MWC, which isn't as good as that BSU/SDSU Big East would have been.
And why does it matter if Hair is willing to negotiate? MWC schools are still too resentful to allow BYU anything nearly as beneficial as our ESPN contract, which BYU would have to break to get a TV deal similar to BSU's.