Spreading it around that much kind of defeats the whole purpose. Needs to be in the one city.
Syd - Accor/Showgrounds fits it all nicely in one precinct.
Mel - MCG/Docklands
Bris - Gabba and ? Metricon a little too far too go for mine
Per - Optus and WACA?
Adl - Adelaide Oval and ? Id think The Parade would need an upgrade for this.