Currently ANZES handles the following for Virgin.
73G/73H - AKL/CHC
77W - AKL
E190 - CHC
I wouldn't be suprized if the ATR's came to NSN when there next heavy maintenance is due.
As the NZ ownership of VA keeps growing, and they taking a seat on the VA board. I'd say it would not be long till we see VA ordering A320s, NZ has a huge interest in the IAE 2500s