Enable Australia to develop peace accords with all countries and become the first responders to international humanitarian need. Use our capabilities and resources to assist with medical aid, logistics, emergency food and water etc. in times of need.
Example internationally, a democratic model which echoes Switzerland or Iceland. Use our multicultural, agricultural, economic, and innovative skills at best potential.
Concentrate our existing and potential infrastructure toward a peace paradigm rather than the current defensive position.
This idea crosses many of your parameters.