The NIC gave no one a windfall, everyone maintained the same seat, status, position they had or could hold at the time of the merger. The west had nothing to do with any of that, and neither did the Company other than facilitating a Transition Agreement between the two pilot groups.
It was the east alone who "gave the company a windfall" by not accepting the NIC. If the east was at all concerned with the company saving money on pilot wages, they could have corrected the issue in one day by simply accepting the NIC and moving on in good faith with the rest of the JCBA negotiations. In fact, they still could today by demanding that USAPA stop the seniority fight and move on to a better contract.
As much as you want to spread the blame around, it really belongs with only one group - the east. No one forced the east to fail to accept a solution in negotiations or meditations. They could have moderated and found a solution that didn't require arbitration, but they went hard line and tried to shoot for the moon. Not surprisingly they lost, but not nearly as big as they could have. Fortunately for them, George Nicolau seems to be reasonable even when the parties he is dealing with are not. Furthermore, the east had a choice to dismiss George Nicolau in favor of another arbitrator, but they didn't. So, the east walked with eyes wide open into a binding arbitration process that could have resulted in a situation with even less protections for the east than the NIC gives, and you want to blame this on everyone equally? The fact is that the west has accepted the NIC and so has the Company. Therefore, and without question, the blame for where this process is at today falls entirely on the east and no valiant attempt to share the blame will change that fact.