Joe and Mesaba,
It is looking like a repeat of errors in C2K, when previous contractual commitments made the Delta PWA economically unenforceable. IMHO they should have merged the lists and ALPA should have fought for it.
I think we understand where this is probably going and it is unfortunate for ALPA members at Comair and the carriers Delta has some control over through bankruptcy.
Or, potentially nothing much happens. Under the PWA, "nothing" is an option. Perhaps it is the most viable option.