In which case let's allow Turkish to also have unlimited Melbourne Sydney too ? Why stop there. How about Istanbul - Sydney - Haneda, and Istanbul - Sydney - LAX while they're at it. Would tick all same boxes. 

So unclear as to why Turkish feel they'd be 'entitled' to have 5th freedom rights between AU and SG. A most valuable route - what's in it for Australia in terms of Turkish getting a piece of the action ? 

Qantas's second-class treatment of Melbourne has been around for decades. Direct flights are available on other carriers to the Middle East, KL, BKK, multiple cities in China, SFO, Santiago, India, Columbo, Vietnam and so on. But oh no, not on Qantas. Why ever would one choose to fly to Europe/UK...

In typical Qantas fashion - not even any mention of whether there would be an easy one stop connection for Melbourne. Which last time I checked was essentially a population the same size as Sydney. 

I loathe dimmable windows ! That and their narrow seats are the key reasons I avoid the 787 whenever I can.