9V aircraft flying domestic sectors...
Jet* using Terminal 1 and NZ using Terminal 2 might work providing our kiwi cousins only fly A320s across the pond. Plenty of airports across the globe that operate both domestic and international ops from the same terminal/gate. Temporary immigration set-up for each arrival/departure, or use T2 bays 55,56,57,58&59 as International only.
Mr Joyce indicated one possible outcome of discussions with the airport was that Qantas’s mainline domestic and international operations and flights from partner Emirates would occupy the Terminal 2 and 3 area
A380 ops from Terminal 2 - No; A380 ops from Terminal 3 - well perhaps, maybe, currently
no suitable taxiways/gates. A380 from T3 to RWY 34L - wow, what a nightmare!