I am speculating here, but if expansion in Australia happens, I would image that it will not be limited to just one or a few campuses. Nor to just one fraternity or sorority for that matter. Basically, I see the possible Australian expansion more along the lines of expansion in Canada. Various campuses and various fraternities and sororities.
And if that were to happen, then I think that in time, an infrastructure (a Greek system as it were) to support chapters in Australia will follow. Again, most likely something similar to the
Canadian Interfraternal Conference. As it is now, the CIFC does not supersede either the NPC or NIC but helps to support and promote Greek life in Canada. I would venture to guess that an Australian Greek umbrella organization would work in a similar way.
Of course, any stable Greek system is not going to happen over night, but it has to start somewhere. As such, I see this as an exciting opportunity to further the ideals of our brotherhoods and sisterhoods globally.