I think this might work as intended--for a little while.  But, after a certain breaking-in period, it'll end up being coopted by those with nothing else to do and plenty of asinine opinions, just like HOAs.  Ever notice how the greatest majority of complaints and violations are submitted to your HOA by the same 2 or 3 people?  Those are the ones with nothing better to do, and a chip on their shoulder about SOMEthing.  It'll be the same with this.  It'll start off sanely enough, with everyone using the new system as it was intended, and the new system working as planned--until the novelty wears off, and those with other concerns will trail off.  Then the trolls, who have nothing better to do and a chip on their shoulder, will be left alone to bomb any sensible commentary and fill it up with their own brand of crazy.