I mean, you can jump up and down all you want but I really think that you’re going to struggle to get traction from QF in this situation. The way I see this particular situation with the CX flights booked on Friday, is very much like a error fare/mistake fare type situation, rather than the usual QR cancels because QF did not ticket on time situation.
It seems perhaps during the frenzy on Friday there was some error in communication between the QF servers and the GDS, which may have led to seats being ‘available’, but not in real time perhaps. So even though they created the reservation, CX have decided to cancel it.
Ultimately the responsibility in this situation really falls with CX deciding to cancel it, not QF. You could jump up and down, but to be honest I wouldn’t hold my breath.
Also re: waitlist, yes you can waitlist with asiamiles