Look in regards to Wallaby distribution I can't give you the facts but the ARU are in talks with RUPA and it will be sorted. Players will have a say in where they want to be put. Just a rough wallabies squad delegation could look something like this;
QLD (Apologies don't know player clubs)
Country & City:
Slipper, Horwill, Simmons, Gill, Cooper
Fainga'a, Schatz, Genia, Harris, Kurindrani (UQ)
NSW
West Syd:
Robinson, TPN, White (Eastwood)
North Syd:
Hooper, Palu, AAC (Adam Ashley-Cooper), Fardy (Warringah), Sio (Norths ?)
Syd Stars:
Ryan, Betham, Folau
Country:
Kepu, Douglas, Beale
VIC
Pyle, Higgers, Burgess
ACT
Alexander, Moore, Speight, To'omua, Leali'ifano
WA
McCalman, Cummins
A lot of the brumby Wallaby contingent will probably associate to junior clubs in NSW or Qld to even it out. But that's about 4-5 Wallabies per side.