Yes I've heard about the proposal to create Star Alliance terminals with AN domestic and int'l star carriers.
Initially, hopes are for a YSSY terminal with a possible third finger built around the current catering areas (??) to allow space for the 747s. Currently I doubt there is the gate space for the morning Star 747-fest (UAx2, SQx2, NZx1, TGx1) not mentioning other widebodies from NZ, AC, NG etc...