Even if they get widebodies, which going off the current backlog would be a 5 year wait, that would only enable them to fly once a day, into HND. That is fairly token. They really cannot put themselves in a position to apply for any future slots, as they have no aircraft that can operate anything aside Cairns, can’t apply for something that they can’t operate in the here and now…so they are stuck with this token 1 slot.
Really does seem like too much effort for not much return, and the route sucks up one whole max per day. Could run to DPS twice a day. They just really really do not want to cede this slot to QF. I think a bit of Management ego inside VA plays a part, many who have left QF prior, and not all on good terms.