As the Pprune site is scrambling posting times again, try to put this one after the guy who suggested bid lines.
Don't even waste your time thinking of bid line or preferential rostering systems in CX.
The first takes at least 8% more crew and requires only 10% of our current scheduling staff. "They", that is scheduling staff would never let Hoi Lan get away with it for the second figure and he would never allow it for the first.
Preferential rostering suggests choice and lack of contol, which cannot be tolerated. We tried to introduce it years ago, devised by AOA pilots with brains far smarter than the entire third floor, but it was rejected.
G day workers are at present allowed by the company and the AOA. In my opinion it is far from good, but until the AOA goes for a suggestion that we might need our rest days (a suggestion only, a ban on G day working may be illegal and would need testing in the courts) then only peer pressure that cannot be construed as intimidation is possible.
Sounds like a divide and rule recipe to me, maybe that is part of the plan...