Funny reading how so few understand how the M&A process works.
No we wouldn't be stapled to the bottom of the UA seniority list. In fact, my guess is the majority of JB pilots would be happy with how that integration went.
It doesn't matter what the pilot group does or doesn't do in relationship to how a merger would finalize. It's in the hands of 3-4 JB pilots (The chairman and 3 other M&A members) who have full authority and autonomy to negotiate and argue before a aribtration board.
A merger with SW would be trickier as the ALPA guidelines don't necessarily need to be followed. What you would worry about is if they tried to Guadalupe Holdings incorporate JB like they did with AT. That's when it would get messy.
I'll take a merger with a legacy any day over SW. Plus, who wants to fly a POS boeing anyways?!