What do you think?

Goods:
2.6 million people live here, big enough but not too big
Suburbs and smaller cities/towns available (Gold Coast, Sunshine Coast, Toowoomba)
Developed
Good weather
English speaking
Low crime
Direct flights to Dubai, Shanghai, Hong Kong, Singapore, Seoul, Tokyo, San Francisco, Los Angeles
Koalas and kangaroos

Bads:
Less economic activity compared to Sydney/Melbourne (but more than where I currently live)
Extremely far from North America and Europe (not a problem for me, once a year to each is enough)
Closest major city (Sydney) is 560 miles / 900 km away (daily direct flights)
Some deadly animals