Truth is the first casualty of PIA, just ask the engineers. Seems to me your biggest problem is not what Qf will do but what JQ pilots flying the same machines for less money (A330) will do. That is what QF will use against you, you will seriously need to get them on side.
The next trojan horse will be the 787, why else would jetstar be getting them first if not to dictate the wage rate to all pilots and possibly engineers.
Good luck to you and stay together.