The Blackhawk move a good example of what will be a slow, expensive shift in policy.
As the war on terror drags on, milking resources and army the the visible front line, there will be pressure on defence procurement policy. The army will be the winner and the RAAF/RAN may lose out significantly.
The navy will probably still get their destroyers, but the RAAF may only get half of it's desired new fighters. The RAAF/RAN may want to put inter-service rivalry aside and debate the merit of a triservice expeditionary capability with relevance to a war on terror- air warfare frigates, amphibious assault ships with new RAAF fighters and army helicopters onboard.
Otherwise, I believe the RAAF will be lucky to get more than a few squadrons of JSF when defence planners recognise long range Orions with missiles and army special forces, far more efficient terrorist killers than medium range stealth fighters, that can fly invisibly into third world nations ( usually without radar anyway ) and drop bombs.
Sunfish
I think you will find the Adelaide Hills, not Sydney, the most well defended airspace in Australia- reference Army SAM's.
S70IP
That looks like a better package/lifestyle than a lot of airline pilots in Oz are getting at the moment.