I think there are two issues there. The first is, I would love for the actual system to be decided on by a group that is more representative than it is right now. If it goes the way you're proposing, the committee is going to make a decision based on the town halls they've heard, the testimony they've heard from witnesses, and the submissions. That's going to be based largely on a very specific group of people and not a broader audience. That's why I recommend a citizens' assembly to actually decide the system.
On September 28th, 2016. See this statement in context.