The licensing on the boxing kangaroo Wikipedia page was unclear but you know the flag that I mean.
“used by Alan Bond in the 1983 America’s Cup and by the Australian Olympic Committee for the 2000 Olympic Games.”
The Union Jack needs to go and few non Australians know what or where the Southern Cross is. Everybody knows what kangaroos are and where they come from. Just imagine our cool cartoon kangaroo amongst all the boring stars, stripes, crescents, etc