That's where we differ, Scooby. I respect your opinion, but I don't believe management will produce a better offer, and they are ready to fight.
Given the disorganisation of the negotiation, it would be better to accept this is as far as it can go *at this stage*. Then, in 18 months time, the negotiation will be better placed for further agreement. Like the pilots, this needs to be seen as a progression, not a nuclear strike.