My opinion.
When the two sides meet again in spring. The negotiation result will be the same. The company will tell the mediator that the company and the union are at an impass. The company will then implement what they want to give the pilot group and the union will have a right for self help. This is when the pilots will decide what to do or cross.
Looks like the senior left seat guys are getting interviewed at other places and going to leave again in droves after the holidays anyway, so it really doesn't matter what happens.