flyawaywithva,
Unfortunately as I'm on the west coast I don't hear anything about Sydney Long Haul (V Australia). Wish I could tell you something but simply can't. I do know that no new 777 are coming any time soon or heard of any new destinations at this time.
There was an article, thinking AusBT, that V Australia might go to San Fran but who knows. It's such a short flight from LAX to get to SFO and LAX is home to Delta, VA's codeshare partner meanwhile VX are based in SFO but the ties aren't as strong as they are with DL - VA are now even arriving into the DL terminal 5 at LAX and next year will start departing from there as well.