I think others covered this pretty well, but having an additional base creates additional seniority options to exercise for the group, and limits the burden the company can place on JFK reserves. You want the easy drive AND the access to pick up JFK open time when it suits you. That's what you want. Many/most want the additional seniority pockets/opportunities created by having a separate base as well as the the hotels/limos/comp associated with not having a CO-base and the limitations on what burden EWR flying can be placed on JFK reserves.

Like you said, can't make everyone happy, but a CO-base is pretty clearly worse for many more people than the small number of people who want their cake and everyone else's.

No need for aggression chip.