As far as a strike and pilots crossing the picket line in not union members.
It will probably be said that these folks are scabs. But since a portion of the East pilots only care about what benefits the East and could care-a-less about the West, I would not call a West guy a scab if this happened. Why should a West pilot support and East pilot, when an East pilot will not support a West.
To say the least, the future is going to be interesting.