From my past experience and observations, from within or outside : act now, altogether, under one flag or........you're ****** 5 years down the road and your lives WILL be a misery. WhatEVER threats, official or not, between the lines or clearly expressed, you will always be stronger together than divided. You will always gain more (lose less) sticking together. Don't take your fate like cattle waiting to get slaughtered.
From what I hear about what's happening to Ryanair pilots at the moment, and drawing the curve for another 4 to 5 years, you'll all be working in fear at the mercy of any new foolish idea coming to "their" deranged minds.
Don't just wait ! Act !