This is what I am thinking, if the B10 wanted Oregon and Washington, they would have an offer by now, they are slow playing them, knowing that both schools want the invite and are willing to wait. It just makes more sense to go after the ACC schools, even if that means waiting 5 to 10 years to do it.
The B10 already has a Pacific time zone game each week starting next year, another one is going not going to make a huge difference. Go after NCU, VU, FSU, and then once again offer ND, if they refuse, pick another school.
The B12 should be offering the two Arizona schools the moment the new P12 deal is announced if it's as bad as everyone is hearing. Get them to jump, the offer Oregon and Washington, full membership no buy in, but if you take the deal, you are all in, no leaving. Give them a week to decide, if they say no, then make the same pitch to Colorado and Utah.