In the near future, the Queen will probably fall off her throne (under the weight of her 10kg gold crown), and that will be the logical time for us to become a republic ... but hopefully not USA style.
The Queen's Birthday holiday will then become irrelevant and so a new Republic Day holiday will replace it ... hopefully on another date and not 26-Jan.
26-Jan can then become Aboriginal sorry/whinging day and the rest of us can leave it to the Aboriginals and forget about it and, on this new holiday, we can focus on what a great country the British "invaders"/settlers plus all of our genuine migrant contributors have created.
Until then Australia Day should remain as it is and we should resist the efforts of the idiot Greens and other leftists to stir up trouble and try to make us all feel ashamed.
