vfenext, you seem to have a big problem with the Aussies.
I don't know in which circles you move, but from what I have seen and heard, no-one holds anything against them. They came, had a look around, and found that there were greener pastures elsewhere. What do you expect them to do, stick around when they saw little chance of promotion, and pray towards the Pink Palace five times a day for the next 20 years?
Contrary to what you say, they were not whingers, and were well-liked by those that they flew with. Perhaps that is your problem; knocked back by the airlines that took them?
Secondly, if you bothered to check your facts, you would note that GF has continued to recruit Aussies, and I think it is a big discredit to management to suggest that they are small-mined enough to black-list a particular nationality based on the actions of a few.