Well, I am no lawyer, nor do I play one on TV, but to answer your questions in simple terms...
The main beef is that a pilot flying the E-170 should properly have been considered recalled (or newly-hired in the case of those flowed up from ALG/PDT), not the fuzzy quasi-separate existance that "Midatlantic" is claimed to be.
Proper recall would have meant fewer company trangressions upon longevity/senority rights..., Nor rampant confusion on the part of the AAA ALPA in regards to fair representation of, equitable sharing of any returns with, and proper merger intergration of those US Airways pilots flying the E-170...
Less pay, sure. That is what a B-scale is all about. But to call it "separate" when it really is not just creates a big and needless mess.
The mess that exists comes right back to that main point... IF what evryone calls "Midatlantic never became what it was envisioned (and promised) to have become, then the reality of what it actually developed into should have been addressed.
Put it this way, compare "Midatlantic" with the recently ratified agreement dealing with the E-190's.
Unlike "MDA", both the Company and ALPA have seen fit to consider those that return from furlough to fly the very same plane (E-190) "Recalled", consider that flying "Mainline"...
Yeah, once again, less pay. But in this case senority and longevity rights are maintained. As for ALPA and those that will fly the E-190, hopefuly they will properly represent those US Airways pilots now flying the E-190.
Hope that clears a few things up for everyone.
Fly Safe