TIMMMEEE the QF option was looked at seriously some years back, but lately, the fantasy of SQ joining up with QF is very much the fantasy in Geoff Dixon's head, not the SQ boards head.
SQ like to operate their own show, thats why when things pick up around the region, they'll re canvass options that provide them the opportunity to run an airline under their own steam. Won't be a domestic Oz operation though.