The plan appears to be return same day frequencies across the ditch with Aussie based 737 crews. Same day returns.
I would say the Kiwi schedule would be back to basic. MEL/BNE/SYD-Akl once Daily. Seasonal Queenstown. Dunedin no chance. Wellington questionable. Christchurch daily from perhaps one city.
By no means whatsoever will they have the crew to even contemplate returning to the pre NZ schedule. Considering picking up Tiger Flying also, plus say a quarter/half of the NZ current operation, I assume the A330 Pilots are going back to the 737 otherwise they appear to be short on bods.