Don't know if they will expand the lounge, if you look at it indepth, from a revenue stand point, I think that their rate of return will not be that much, seeing that they haven't got say, 10/15 flights a day, when they could get back their worth of money spent.
First VAi from BNE is to CHC, at 8.30am, then the flight to AKL at 9.30am, then ZQN at 10.05am, then US, is one set, once that one flies off, at 11.05am there is nothing till 6.40pm, not sure what time the BNE - HND flight is planned to leave.
If ANA decides to fly to BNE, they maybe will use Plaza Premium at BNE int, or might stick with "my Lounge".
QF is asking Aud$6500 from its ports in Aust to Japan in J, VA is asking about Aud$3500, BNE - HND starting, maybe will go up to Aud$4500 or more, once they settle into that route.
$3500/$4500 for the My Lounge is ok
I am just presupposing here, maybe its not a good thing, but have to wait and see what VAi in the end will do, price wise, or FF liaison wise with ANA.