The problem with this entire thread is that airline unions do not control seniority lists. Hiring, firing, merging or not merging are management functions. Management at airlines control the seniority lists. ALPA can push management to merge a airline or pilot group but they can't mandate it. Very few airline managements are going to merge all their pilots onto one list. It would shift the balance of power way to much in favor of pilots. If in fact management wants to have one list at Delta or any other airline all they have to do is merge the airlines. DALPA or ALPA would have no say or control in the matter just as they have no say or control in forcing one list outside of asking for it in section 6 negotiations. I am always amazed at pilots who believe for some reason that the seniority list is maintained and controlled by the union and we could merge comair or asa just by deciding to do it. Nothing could be further from reality.