As you're probably aware a lot of people detest Australia Day as it marks the day the first fleet arrived in 1788, and is known as "invasion day", yet it is widely celebrated with patriotic hoopla by the idiot masses. So that's why I'd replace it with a republic day, hopefully on a date later in the year when there aren't so many holidays. But yeah, as for an indigenous people's day you're right it should be a reconciliation holiday. Hopefully with our shiny new government we will see some progress now. With the Liberals losing a bunch of seats to independents it's unlikely they're going to get them back in 2025, so Labor should have a reasonable run to get stuff done.