Agree VA's move is a smart one and puts a little pressure on QF - both on MEL-LAX and PER-ME (though those EK 380's and the QR flight kind of cover it too).
A general comment now:
many of the posters here who are in/from WA comment on their wants and wishes - be it JNB, SIN or HKG.. and that's absolutely *fine* - as someone else said we all have our pet routes, places we need or want to go, and schedules we'd like. In the world where money isn't an issue we'd all have private jets to take us where and when we wanted with the comfort and service to boot. In the real world, each of us is just one point of demand vs a world of competition and supply - to the QF's, VA's and all the rest of this world it's simply a big economic cost/benefit analysis coupled with availability of aircraft, fitting into maintenance schedules, crew schedules, costs (and remember, the Asian and ME3 carriers have lower ones, which is why the SQ's and Scoots of this world can send widebodies down) and all the rest.
Yes, I loathe the 737's on all these routes, but QF has 75 of the buggers and bar the 332's and small fleet of 717's that's it on domestic and short haul international (eg: PER-SIN, some DPS routes, east coast-NZ etc). Why? they are profit machines - lower cost per passenger with relatively high density in Y, yet not too big to be able to allow for schedule and to compete on price. Would I rather be on a 737 PER-SIN or a 787? a 787 for sure! No brainer. Where does QF see a route to make money or at least break even? with a 737 rather than 330.
I suspect come a few years time as 787's come on line, this will have to push some 333's onto other routes, and you may yet see PER-SIN, PER-HKG or PER-BKK arrive in a wide (even if some of the dreamliners are replacing 744's). Agree QF has ceeded a lot of Asia to a certain degree, but things like opening up MEL-NRT and HND routes show that QF is clearly always running the numbers and working to a plan. It may not suit everyone, and never will, but they're in it to make money and keep afloat, not provide free F seats to everyone from ADL to Dubbo