thinking about Norfolk, it would be much better if it were designated as an international destination, not an Australian domestic destination.
At present, only OZ or NZ airlines can operate in & out of Norfolk, at least from OZ end (many airlines could operate from NZ end). ON is really an Australian airline, OZ AOC & OZ rego.
If Norfolk was designated international (they do have duty free sales already) then many non OZ/NZ airlines could operate OZ mainland/Norfolk/NZ.