Yall are looking at this from the prospective of a bunch of pilots. A pilot-centric mentality.

But there are many other considerations, and I would dare say even more significant, than the effect the pilot group has from the perspective of management.

In other words labor (that's us) is only one factor out of many other factors in management's decision. They are probably not going to decide to close a WO strictly because of the seniority weighting of that WO's pilot group. Routes, planes (age, efficiencies, mx requirements, capacities, etc), infrastructure, liabilities, and other factors will probably given much more consideration than what the pilots make at any given WO.