The 787 will remain with JQ in some form. Dash 8 or Dash 9.
With 54+ type ratings underway and continued recruitment onto the 787 you would have to wonder about the naysayers street cred.
As for the XLR 320s. Same wing, heavier load. Forget about the MORAs on the current PNG escape routes. For the XLR its simply not achievable.
60 min wx reqs in most destinations outside AUS will be a stretch. Looks great for the bean counters but thats where it stops.
Two isles is where its at.
MCD