Fact of the matter is that the Academy is 100% chockers with AUSTRALIAN ab-intios and there is still a shortfall on endorsements gained. The 'experienced ATC' is open to everyone; expats, RAAFies - there have been plenty of ex-ASA employees return to the fold as well..one is instructing there atm if I'm not mistaken.
If you are on the shlt list though I guess it's stiff bikkies.