I'd like to see 10 teams in the future around 5 years from now and then 12 another decade or so after that.
Gold Coast- Could play out of Metricon Stadium which will be upgraded for the Commonwealth games, It's already a massive tourist destination in the summer and would create a rivalry with Brisbane, also Suns and Titans fans would most likely get behind it.
Geelong- Instant Melbourne Gellong rivalry. kardinia park has fantastic facilities with more upgrades on the way, there's a big enough population and locals would get behind it the same way they back the Cats.
Canberra would be next of the rank playing out of Manuka Oval with either:
Perth 2 (would play out of the new stadium or the WACA)
Newcastle (has the population but do they even have an oval Stadium big enough)
Far North Queensland (Townsville has the population, Cairns has beter facilities at Cazaly's Stadium)
With what playing pool?
The only possible expansion that doesn't lower playing standards is a Trans-Tasman competition and obviously that has pretty major issues in regards to New Zealand cricket
Why would there ever be a second Perth team?