Hi Mike.
I understand what you are saying, and there is merit in the example you provided questioning the over simplified assertion that I stated, however they are different situations. Labor formed government with the greens, and have had a long standing relationship, despite the more recent public spats. There is no such link between the coalition and the FNG, nor does the FNG have any significant bargaining power to influence policy decision.
This is not the case with the Greens. The greens preferences have been crucial, and unless its a landslide, will continue to be crucial in the upcoming election. Without the Greens, Labor would have been irrelevant for the past decade or so. Unless Labor come out and follow the coalition lead, Labor will be continued to be seen as aligning themselves with the greens imo.
All Kevin has to do is come out and say that he will be preferncing the greens last, and then, their can be no question about their position. Any party, independent etc that assists Labor to hold onto power is directly helping the greens cause. Katter is no exception.
To get back on track, the Greens would have a wish list they will use (and good on them) to negotiate, and one of them will undoubtedly be something like what is being proposed in post #1
.