The greatest Australian Artist (and designer) that I know of is an American by chance. Burley-Griffith who was part of the greatest Artistic eras (Art Deco) which is still 'visually' more pure than any other decade and its cacophony of styles fighting it out.
The intelligent designs and visual angle Griffith bought to the concept of a 'City' is awesome.
I like Artists who 'Dream Big'.
More so than the likes of a painter on a 1m squared canvas.
The people of the World are waiting for a Dream Big (as big as a 'nation'

) Artist.
Not some 'old' historic artist or some meaningless abstract kiddie art.
The people of the World want a Game Changer.
The majority of Australian Artists follow the Gov-General to European style Art or the PM to American/Disney style Art.
Or Media Art - which is all about Archibald 'celebritiness'.
Dream Big when it comes to Art in Australia.
Sorry, I cannot agree with you. For one thing, I don't believe in one great artist as you do. As for the "people of the world" (your words) I don't believe they are waiting for anything. They, We, just stumble along through the centuries pushed this way and that by events. And most of them don't give a sh!t about art, artists or "big ideas.