Correct me if I'm wrong, but obtaining the right to live and work in Australia isnt such an easy excercise if you are not Australian. For Kiwis and Brits maybe the task is a little easier, but otherwise, its a hell of a paper-chase. Employers must sponsor, proving that the special skills are not avaliable in Oz.
Being an Aussie, married to a Frog, believe me it wasn't so simple to obtain this type of visa for her. Not even Marriage is an 'automatic right' to live and work in Oz.
Thus, to conclude, its my belief that it will have to be crew jobs for Aussies first....unless they base OS of course.