I spoke with Ewan earlier this year. OZJET only have an AOC for the 737-200 at present and just two aircraft operating in Australia.
The routes proposed are however are not too different from what Ewan would suggest. It's not about leaks from Air NZ. Why would a new commer take on routes where both Qantas and Air NZ operate?
It's simple logic.
I recall during 2002 when jetconnect tried to pick up the pieces of failed Tasman Pacific (aka Qantas NZ) Air NZ slammed Freedom Air onto domestic routes but in the end only scored an own goal. The Air NZ budget product offered inconvenient times, but overall just skimmed the yield off it's parent's services.