SIN/HKG are very likely options, as we all know going to SIN will tie in to the SQ network like VA does with EY/DL-VX
HKG could give multiple options like taking up the tag flight with VS but it wouldn't suprise me if they linked up with CX after the lovers tiff from QF - similar to NZ.
What I am curious about is the touted potential of a third route as there is no obvious option out there unless for some reason they go to LHR (yeh right)