Could be way off base on this one, but I'd think it will either be 2 pilot or no pilot, no real in between. If there is one thing that has the potential to unite pilots, it's the threat losing half the pilot force and the stagnation/loss of wages that single pilot ops would bring. Not that i'm advocating for it, as I don't think I'll see it during my career, but imagine if just AAL/DAL/FDX/SWA/UPS pilots didn't show up to work one day. I'd think the companies/regulators have know to be prepared for such an event.