"Home grounds under consideration include Shark Park, Kogarah Oval and Wollongong."
I figured the Gong is the best one because its got a strong football culture already and isn't as directly competing with an NRL team (the Dragons barely play there these days, right?).
I think Canberra and Auckland would be sweet, but I also understand the FFA's reasoning behind expanding into markets they already have a share of to generate rivalry. However, Auckland would kind of do that (thinking of NZ as one Sydney/Melbourne sized market) but there's all the AFC special agreement BS that goes with that. The key is really making sure that the clubs have strong identities for fans to relate to - the Heart never did really for instance, so that rivalry thing didn't work like the WSW/SFC one.