Briefly, with the closed list, the parties decide the ranking; with the open list, the voters decide. At the time of the report, we heard that voters in New Zealand said the parties shouldn't decide; the voters should decide the ranking. We were very concerned the proposal for MMP might hit headwaters because of that alone.
Since that time the New Zealand Electoral Commission has reviewed closed list versus open list. They found there was a change in view, and that over 60% of the respondents say the status quo is fine; they're comfortable with a closed list. So that was a big change, as well as the reasons I gave.