Hi again pweekes,
OK, I'm starting to share your frustration! I think there's an issue with the Award engine.
Requesting SYD-YVR at various times - with fexlible dates - returns me a quote - and then doesn't! At the times it doesn't, even requesting a multi-city via HKG reveals nothing. If you then select availability between SYD and HKG and then between HKG and YVR, presto! it appears again.
What I have been able to glean - there is J availability next May/June via HKG. Booked as separate legs it comes in at 60,000 + $202 and 112,000 + HK$1019 per person. Now I'm pretty sure at one stage I managed to get SYD-YVR in J at 139,000 but I couldn't refind and couldn't confirm fees. An alternative - with availability - is SYD-DFW-YVR, again on separate tickets, this comes in at 112,000 + $459 and 36,000 + US2.50 (yes!) respectively. The issue with separate tickets is that, strictly speakinmg, you're not covered in the event of a misconnect.
I'd be tempted to look at the various dates as separate legs, decide which dates you want, and then phone QF and ask why you can't at least book this as a multi-leg. They *may* offer to waive the booking fee if you can prove that the system is not allowing you to perform a booking that they can - there have been varying degrees of success/failure noted here and eslewhere.
You can then take the various pieces of advice with respect to Y legs back again.
Good Luck!
Regards,
BD