I bet they expand to 14 with only 2 byes (for the SEC and B1G champs)
They'll probably also keep some form of autobid. Maybe it'll be a 3,3,2,2,1 format where the SEC and B1G are each guaranteed 3. Maybe they'll push for 4. Maybe it'll just be that the 5 conference champs get bids and everything else is by committee.