At the moment, I'd be expecting Paddy Ryan over Dan Palmer. Similarly, expect Ben McCalman over Fotu, Schatz and Quirk. If there is an additional lock, Hugh Pyle or Sam Carter. More likely is another Hooker, namely James Hanson.
There will probably be two scrum halves in the next six. Depending on how Phipps goes against the Reds and the Brumbies, it could be Phipps and Burgess or White and Burgess.
Chances are there won't be another 10 - Barnes and O'Connor will be seen as enough and as we all know, Deans is okay with players out of position (See JOC (James O'Connor) at 10 in 2010), so we'll probably see Lealiifano at 10 before we see another 10 in the squad.
There will probably be another winger - Drew Mitchell is the best bet for reasons known.
So I expect the next 6 will be
Hanson, Ryan, McCalman, Phipps, Burgess, Mitchell.