Using the old "you had a choice and you accepted the job" as an answer is not a valid one.
I'm sorry but it is very valid.
Your argument is like joining a club or a game and then wanting to change the rules because they don't suit you or like those fools who buy a house near an airport then complain about the noise.
You made a decision and if you didn't do your homework then you have only yourself to blame.Why should others have to change their plans because you come onto the scene and want things moved around so that you feel better.
Life is not fair and thats the way it is.
Why didn't the mam crew apply for QCCA if they wanted to fly international?You chose to remain as a mam in s/h.
You are right in that it's normal to improve things for the better but not at the expense of others.