Aussie society will not be aussie society in the next few years, asians are now under control of major parts of our economy and more immigrants are coming than actual aussies are being born. Soon "Australians" will be a pitiful minority, amongst a land swarming with foreigners that rule the place. And its expected anyway, cos foreigners work 10x harder than aussies and know that if they want a comfortable life then they will have to work for it. the culture of "entitlement" and "laziness" amongst aussies will be their downfall, as their cultural identity will eventually become extinct.
Anyway I will teach my kids mandarin first, because it will be a necessary language to know in the future. then I will integrate french, spanish and polish, and let them learn english at school. Perhaps once they're a couple of years into preschool I might teach them japanese.
And if you think its not possible for a kid to learn how to speak any language if so many different ones are being spoken in the family, then you're wrong, because all my cousins had at least 3 or 4 different languages spoken to them at home by different people, and the kids grew up knowing how to speak to each person in their language. Kids are fucking amazing. You would not believe the intellectual potential they possess at extremely young ages.