Spodman,
I moved over to the US in April after a fair amount of flying in Australia, and am still coming to grips with the differences. While my knowledge of the US system is obviously no where near as good as FWAs some things which may cause some 'hiccups' when Oz changes. Firstly is the amount of radar coverage. Apart from the coast and some isolated areas inland, I did not get much radar service back home. Over here I have not encountered a time when some one has not been watching me. This has probably made be a little lazier in my nav techniques! Although not sure about the rules, the company I fly for will not plan to fly out of coverage of a navaid. At times I have been told to track direct to a navaid which I can't pick up, but then all I have done is requested a vector until the aid comes in.
I have not been following the proposed changes back home. I hope it doesn't end up like the last one!!!