all P5 conferences survive, I think the Pac may be an option. They changed their voting rules and if the Pac really wanted to get to 16 there isn't a great list of options.
I would guess the B12 is the most likely option with the P12 staying at 12. I think staying Independent much more likely than joining a P5 conference unfortunately. But I think being independent is much better than being in the MWC or AAC at least.