Plus, given the floods last year the Queensland government is trying to boost the state's tourism industry any way possible, and throwing a few bucks to WRP is definitely a better use of their money than most other options.
Also, we know ActiveTV were scouting multiple locations in Sydney, which implies it's used for more than just a starting line.
And it makes more sense to have a Brisbane leg, followed by a Fraser Island leg, than to squeeze them both into one. Even if TAR Aus uses the "old" finale format.
Leg 1: Salta
Leg 2: Buenos Airea
Leg 3: Asuncion
Leg 4: Somewhere else in Italy? Milan, perhaps? Or Rome or Naples? Pompeii?
Leg 5: Turin
Leg 6: Tanzania (why go east to Baku, then back west, then all the way east to Brisbane? Especially with the distance?)
Leg 7: Azerbaijan
Leg 8: Brisbane
Leg 9: Fraser Island
Leg 10: ?, but I doubt they'll do an Australia-to-Japan leg twice in three seasons
Leg 11: Osaka
Leg 12: Hawaii
The other, more likely option, is that there's one leg in Italy and either Tanzania or Azerbaijan have two.