In effect yes pooling from Mrs. Wrijo will help you get Gold faster.
And certain domestic NZ fare classes will get you status credits on VA.
https://www.velocityfrequentflyer.co...EarnFareClass/
Air New Zealand - Domestic New Zealand: Q, H, M, V, L, G, W, T
Air New Zealand - Domestic New Zealand: Y, B
I'd say go for it if NZ Gold is too far for you. You basically get the same benefits on Domestic and TT flights.