I think that there is a fair amount of misinformation floating around...
F28/27 - did not fly ETOPS.
You can easily fly non-ETOPS using WLM/SYD then CFS/OOL then NLK.
From memory to go direct SYD-NLK you would only need 75mins ETOPS.
Let's leave OZJet to get on with their job. I wish them every success in this venture.