I do civil rights law so I only passing knowledge of "piercing the corporate veil." Certainly, the concepts have expanded or contracted since law school. It struck me as a field that only specialists should deal with in practice. Concepts seemed muddled to me. The basic rule is to favor the corporate structure. Australia is a different country. The basics may be the same b/c both the US and Australia were British colonies.
More is involved than minimum contacts in piercing the veil. Minimum contacts consistent with US due process may be read differently in Australia which may define due process and personal jurisdiction differently. As a Beatles fan, I am proud that minimum contacts in NY were cemented by the Beatles litigation against their former manager (save Paul who had his father-in-law). Special consultants were hired. They were told never to step foot in NYC. George missed a friend and trusted his close friends. As soon as he knocked on his Manhattan's friend's door, the process servers grabbed him. Years of litigation down the drain. Finally, Ringo Starr was the only one who was a good client and stayed away from NYC. In a landmark case, the court noted the hundreds of millions of records sold in NYC, affiliated corporate officers, recording studios used, etc. and found that an individual can do business in a state to warrant personal jurisdiction. Yoko fired the Harvard/Yale large firms involved and hired a grunt lawyer from a local school. He did a superb job.