sir1963:
I also did NOT want any minor party to be the tail the wagged the dog.
TBF, greater influence from minor parties is the whole point of MMP. You think Winston is dysfunctional? He's a paragon of reasonable compromise compared to the Republicans vs. Democrats or Tories vs. Labour. Even in Australia which is largely 2-party in the House of Representatives you have some "minor" party influences with a large proportion of independent MPs in the H of R and an all-but-in-name Party List vote in the Senate.
States with two-party politics truly are two sides of the same coin. They have no incentive to be anything but.