My money is on the QF9 becoming a 787 service doing MEL- PER- LHR. A380 to come off MEL-DXB- LHR and perhaps do just MEL-DXB and connecting with the QF1 for those that want to do LHR that way or otherwise connect into the EK codeshares going elsewhere in Europe.
That frees up 1 A380 if they continue to fly MEL- DXB or 2 A380s if they no longer fly MEL- DXB at all. That A380 I reckon goes onto SYD- HKG. That frees up a 744 to either be retired or to fly MEL- HKG. If the 744 goes onto MEL-HKG that would then free up an A330 to go elsewhere into Asia. Seoul? Taipei? I reckon we'll be into Beijing prior to that but that's an option too.
Interesting times.