Southflyer, pretty much it.
Been in this industry 20 years and have never seen threatening to not work days off, taking more fuel to piss the company off, going sick, saying "I'm not going to answer the phone", bla bla bla, ever achieve anything other than to have a few guys get nailed for obstructive behaviour.
This will run a natural course regardless of whether some do or don't go to work on days off, eventually there will be no crew left to legally call for flights.
I wait with anticipation what will happen when the transfers to the 777 take place, pandora has her hand on the box lid.