You’ve raised great questions.

I second those notes on national figures. I personally see an orange flag when people point to national metrics of economy, luxury, etc. as a sign of governance success (or failure). I’ve seen neglected public housing and gentrified tech-worker luxury a suburb apart, jump a couple more suburbs for mega-million mansions on the waterfront. This is all within an electorate or two. So what the heck do national statistics matter?

You mention means, medians and modes… I like to see medians when they show their face, do you have some critiques of medians in these kinds of statistics? I’d like to be aware if I’m giving them too much credit, perhaps because they so clearly contrast against means to demonstrate inequality in distribution.

Anybody have good data sources they’d like to share?

I’m afraid I don’t, especially not for Australia. I could try and adapt the Wealth Shown to Scale explainable to Australia’s ultrawealthy…