I've said this before here- what airline beancounters have to fear is unified, motivated pilots, joined in a stong and vibrant national union, calling in unity for one seniority list from the right seat of the BE-1900 to the left of the B-747.
Which is to say, they have little to fear.
(Apologies to W.F. Buckley for flagrant plagiarism).
BTW, I was at ground zero of the RJDC dispute, holding an MEC office (o.k., just safety Chair) when we were wholly bought out by big D. I have flown with some of the RJDC organizers, and know several more. These are the VERY SAME bunch that argued against pursuing One List with our Widget brethren. I would go to these meetings and argue that I would be glad to have seniority # 10,001 - only to be hooted down and told we should hold out for date of hire. RJDC members are "lifers" at the regionals - nothing wrong with that, but pokes a big finger in the eye of any unified strategies with mainline brethren (see paragraph 1, above).
It is going to be a medieval bloodbath in the years to come. I'm glad I'm watching from the freighter sidelines....