What does a head of state do?

An Australian head of state would do the things currently done by the King or Queen of England and the Governor-General.

He or she would represent Australia overseas, welcome foreign leaders to our country, speak for our people on major national occasions like ANZAC Day, and be our leader at major national celebrations like football grand finals and commemorations like disaster memorials and military funerals.  

We would have a person who sits above politics and who embodies community service.

They would also have the constitutional role in our government that the King or Queen of England and Governor-General have today.