It makes no sense to expand out west. Why would USC, UCLA, etc come east to play Duke, BC, or Syracuse. There’s NOTHING in it for them. No additional strength of schedule.
PAC-12 has FOX as a rights holder & ACC has ESPN; how do you resolve that? FOX isn’t going to give it up, especially if their other conference is dissolving before all of us. ESPN only has so much cash; plus they’re going to want to lock up the 12 team playoff while they have exclusive negotiation rights. If anything, I can see the Worldwide Leader cutting bait on the ACC when their deal is over.