There are two we need to keep an eye on as they are based on outside forces: specifically our reliance on imported oil – we only have a stockpile of around 26-30 days. Options being proposed will not address the need if we start running out (if there was a double hit covid-19 AND an oil shortage – Australia will not slow down, it STOPS.
The other issue to watch is our cyber-security, as an island nation, a long way from the rest of the world, a catastrophic cyber hijacking or cyber war, or whatever, would be devastating