I don't see how DL/NW or USair/AWA set the stage for this integration. They were both under the old ALPA merger policy.
We have a new policy that is quite a bit different. The arbitrator will be tasked to merge the lists using the new rules. LOS is a new factor and there is no telling how much or little the arbitrator will use LOS in building the list.
DOH was not a realistic proposal under the old rules and it hurt one or maybe two different pilot groups by starting there. But with LOS one of 3 guideposts that can be used to merge the lists, DOH is now a valid starting point.
Capt Hook