It's a long way off, but it will be interesting to see if JL operates extra flights from SYD. My guess is that even if allowed under negotiated bilateral flight agreements, it still would not commence any direct flights from MEL (even if it had the spare metal).
Similarly, should QF International still be in existence in seven years' time (given its inability in recent years to make a profit), will it run some extra flights for the general public (not counting a flight or two each way for Australian Olympic Committee athletes, staff and associated hangers-on).
HND has further come into its own, although Japanese domestic flights face severe competition from what is among the world's best high speed train network. I never use internal air when in Japan as travelling by train is so reliable, comfortable, fast and scenic - beats sitting in an aluminium tin can any day!