While I don't mind having 1 Kiwi team in the mix, I do think the A-League can make a legit 16 team league with only Aussie teams. Its just a matter of time.
Australia could support many more teams but not in its current model. Clubs should be allowed to spend as much or as little as they want and compete in market similar to the leagues in Europe.
Pretty interesting to see how poorly areas like Geelong, Hobart, Wollongong and Canberra performed, while bids such as Brisbane, northern Sydney, and southern Sydney excelled. Long read: Unpacking the ‘metrics’ in the A-League expansion decision