On WSI lounges, notices this snippet in the PER Airport Master Plan (draft) just published.
I wonder whether some of the smaller Australian airports (eg. PEE, WSI, ADL, OOL) are pushing this.
The big difference in Australia I guess is the differential level of security (particularly liquids) and access (ticket required for international)
I guess the closest you get to this is OOL, where you go through to the domestic departure lounge, before proceeding through additional security and immigration to the international gates which is a much smaller space.