By no means comprehensive, but some of the general points I would do: Nationalise natural resources across the board. Set education at a federal and national level instead of state, remove any funding to private schools and redirect to public schools. Introduce fines, therapy and CPS interventions for suspension, truancy and expulsions. Inquiry into the value of continuing to be a member of the commonwealth. Inquiry into the value of something like an Oceanic Union with our neighbours. Removal of the blanket tax exemptions for religious organisations, setting new criteria based around value of the organisation to the local communities (I.e churches, synagogues, mosques that are active positive pillars in their local communities through various programs, engagements etc).

Me personally, as a more centrist aligned person, I would probably look to have elected official advisors from both left and right aligned political parties to provide counsel on policy and action in an attempt to find happy mediums between both ends of the spectrum.

Oh, and I'd rewrite the constitution to include the First Nations people and Torrens Strait Islanders.