Simple! It doesn't work!
People just screw or try to screw all their colleagues under the motto "survival of the fittest."
Most people are naive enough to believe the company line that a seniority system is more expensive for a low cost airline. But why should it be so? Additionally, those same naive people also believe that the complicated and non-transparent company imposed systems in place (leave bidding, base transfers, upgrades) are "fair and balanced." And if it's not fair to you? Well, then you 'progress' into kissing the @ss of you base captain/OPS manager and you try to make a deal for just yourself.
Oh....and then there is
BALPA, the
British
Airways Line Pilots Association for which a lot of easyJet pilots pay a monthly subscription fee...
BALPA as a whole seems to be more concerned with BA related things like Project Lauren instead of the different European contracts EZY tries to introduce or trying to introduce a seniority system for this orange "career airline" for which we work. There is no vision from
BALPA that Low Cost is here to stay, nor is there a vision about the related problems like fatigue, pension and seniority. It's all quick fixes, a new coat of paint over the same rusty surface.
No doubt the EZY CC tries very hard, but I wonder whether they are given the adequate resources from
BALPA HQ to deal with the massive challenges that lie ahead.