I think that if the committee came to the conclusion that a particular kind of system would be desirable, it would be very helpful if Parliament had a real debate—a kind of “second reading in principle” debate—about whether this is really where they wanted to go.
If you decided to go to an MMP system, it would be complicated to design. I remember that when the British Columbia citizens' assembly designed their MMP system, there were I think 17 separate decisions that had to be made about the fundamental pieces, and there were very subsidiary pieces. Every time you made one of those decisions, it impacted upon the other 17 parts of that MMP system.
I think, then, that having a preliminary debate about whether to have first past the post or the alternate vote or a compensatory system such as the law reform commission suggested or an STV system would get you a long way down the road. Then there could be a debate about the niceties, which is where the traffic is really going to hit the chickens in terms of MPs' interests, financial interests, funding, registration of local associations, etc. They're all going to be deeply affected by the details, but you have to get to that principle—what type of system to have—before you can get to that point.