Like if somehow the minor parties (Act, Greens, NZF, the cult party, TOP, etc) got enough votes and then also decided to join against both major parties? It would be a total mishmash and would never happen but what do you think would happen if we hopped into bizzarro world?
Absolutely. Labour and National are both centrist governments, and historically have crossed over each other on various issues, most notably National raising benefits under Key. They have far more in common than Act does with anyone on the left.