EY is fat on A330 and A340 crews, thus they can play the rough game with them....Nobody's leaving yet, isn't it ?
On A320, though, things are different, Mixed fleet is a long time gone dream and/or lie, upgrades all go on A320, coz nobody wants to go there with lower salary, poor lay-over accomodation , crazy changing rosters, hardly any more than a day in advance planning.
Of course all these bad aspects come on top of the usual Pathetihad crap, like:
Poor medical
Accomodation nightmare
Day to day harrassment
Poor rostering
Non cooperative policies
etc etc....