This year would have been such a great chance to take Tests elsewhere. How often does Australia get 4 Tests in 7 weeks? NZ did the right thing by taking the game across the country - such a huge risk and I am glad they did it. The CHCH game drew the biggest Test crowd there for 78 years.
The ARL should have done similar. One game in Melbourne was a good start but they had the chance for something more. If Townsville, Canberra, Perth or Adelaide has good rectangle ground capable of holding 30,000 plus (my personal minimum capacity for Tests in Oz against GB and NZ) one of these cities should have been considered for the NZ game (since Sydney, Brisbane and Newcastle have hosted them recently), then Melbourne and Brisbane could have hosted GB (since Sydney hosted them last time in 2002) with the final in Sydney.