Speaking as pax, QF's only first class is in the A380. If they want to retain PO's and other VVIP flyers they'll need to offer first on the Europe/US routes, so the 380 is going to stick around until at least the 350-1000 with F are operational. QF 787 is a god awful experience in J, never would I ever spend more than 4h in that knee cap busting sardine arrangement. Next SYD-LAX is going to be on AA J for that reason.