Hi, maybe not excatly the answer to your question but maybe useful information for you. I flew several times from Asia to Mel and Syd with Malaysian. The C-class ticket is "only" 70000 miles and excellent value for money. Buy a ZRH -BKK - ZRH in Eco and try to get an upgrade and then fly with MH via KUL to Australia. ( Works as well via HKG - KUL - MEL/SYD