I do it from time to time with those "feedback" threads anyway, must have been four or five of them by now. Though avoiding flame wars is quite tricky, putting "rules of engagement" would over complicate things I think, then again - who knows?
So, quite frankly, I'm now sure if this will work, I've seen both good and bad, both constructive criticism and plain old bashing flaming from such discussions. Community does too rare reach consensus on anything and even that has to be quite simple and straight-forward, whereas factions aren't simple and there many views possible, some being opposite to the others and negating each other in the end. It could both good re-organization and a road down to flaming hell paved with good intentions (and sometimes not at all).