As with any business that is going under, you need to focus on:
1. Reducing costs, but without damaging service.
2. Finding new ways to increase revenue.
With that in mind, I would:
1. Direct some of the newer planes to QF rather than JQ.
2. Reconfigure the seating arrangements of the existing planes (cheaper than buying new ones) to include:
(a) More business seating (as these are the seats with the higher margin and these sections of the plane always seem to be full).
(b) Offering Premium economy on more flights, particularly overnight international flights.
(c) Offering a radically better flying experience in economy than any other airline - e.g. more leg room and bigger seats. This way, you could continue to charge the less-competitive prices as currently done, but offer more for the money with little additional cost.
3. Drop the price of the business class fares to be at least a bit more competitive (and with more seats, you'll be able to fill them with paying customers and enable your loyal FFs to upgrade more often).
4. Train your staff on exceptional customer service.
5. Focus on improving the amount of cargo that you transport - only works with regular, daily, flights - as cargo is also a high margin area as I understand it.
6. Focus on growth areas (e.g. Asia).
7. Cut down on wages by basing more international flight crews outside of Australia so that you don't have to pay them the exorbitant union-demanded Australian wages (but whilst still paying a fair wage, of course).
8. Develop an Asian hub for international flights to and from Australia, Asia and Europe.
The things NOT to do include:
1. Making it more difficult for your loyal customers to stay with you by:
(a) "updating" the website so that it is clunky and difficult to use, with less features (e.g. mASA) than it had before.
(b) taking away flight options (e.g. getting from PER to HKG these days on QF is a nightmare).
(c) making it more difficult for your loyal FFs to remain loyal by taking away the perks that come along with being loyal.
2. Saying that you offer superior services and then not providing.