WI: A Stronger Australia at the Treaty of Versailles

What would happen if Australia had entered the First World War with a stronger military, and had won enough important victories to give them a much stronger presence in the post-war talks? In OTL, the only change involving Australia was when Kaiser-Wilhelmsland (now the northern half of Papua New Guinea) was added to the Australian territory of Papua, despite the efforts of the nationalistically-minded PM, Billy Hughes. But what else might Australia have gained?
 
Any greater Australian contribution would be a matter of degree; maybe a few more warships, more Australian officers in higher command, Australian built weapons and more logistic support. Maybe Australia could swing that into the creation of a Dominion Army with the Canadian Corps, New Zealand Division and Newfie regiment so all the Dominions get a bigger say at Versailles.
 
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