I don't get why Kalgoorlie's runway can't be extended to (say) 2400m which would allow a safe arrival for pretty much anything that rocks up in Perth. Nominating Kal instead of Island Reserve would save vast tonnage of fuel carried to Per from HKG/SIN/BKK, maybe even JHB.
Surely Perth's fueller would be the greatest beneficiary (and the client airlines second). With inbound aircraft rocking up with less in the tanks, they would sell more kero for the outbound sector.