If I have any concern with Nathan Cullen's suggestion that Canada hold a referendum on electoral reform only after seeing a different system in action, it's that it may concede too much to the people looking to set up roadblocks in the face of a clear mandate for change.
But the proposal should nicely challenge the obstructionists as well. For anybody motivated to ensure we have the fairest possible system of whatever type, it provides reason to work on developing that in the near future. And anybody still demanding no change at all will be quickly exposed in valuing their own entrenched advantages over any attempt to develop something better.
[Note: Re-post, as the initial post disappeared into the intertoobz.]