Packrat... I do not live in Melbourne.
I agree QCCA may be the most cost effective group, however QF longhaul are the most expensive, and currently the flying on the 747 and A330 is predominantly done by QF longhaul.
In times like this is makes absolute business sense to direct the flying to where the greatest cost savings can be achieved. As I understand, the agreement on the distribution of flying does not form part of either the LH or SH EBA, but is contained in a separate document. Maybe time will tell whether this agreement can actually be enforced by either division.