I see Japan & Sth Korea, have obviously worked together to both play 2 games each at home, against Costa Rica & Chile in the September FIFA window (7-11th Sept).
These games would cost money to host, but would hope FFA & NZF sometimes have talks about trying to do something similar. I remember a few years ago, South Africa played in both Oz & NZ.
I guess little motivation to schedule international games in Sept window downunder, as interferes with pre season build up for various A League teams.