AC seems to be doing pretty well with their SYD run these days if my contacts are to be believed.
I can only imagine how much more traffic they would get (esp. from YYZ) if they offered at least 3 nonstop 345's a week from YVR to SYD?
Being based in YYZ I avoid the current routing like the plague. I prefer the AC/UA routing via SFO/LAX.
cheers
Alek