I like this - as a fan of democracy.
Democracy costs, I think it’s OK that it takes a bit of time, more representatives, more votes is OK.
More civic engagement is a positive. Hearing the viewpoints of your neighbour is positive.
A really interesting dynamic, is that you would be creating a strong pipeline of leaders/representatives developing bottom up.
A lot of things of value are very hard to measure.
X degree influences can be very hard to measure.
You may hit your target metric, but secondary effects may be making the whole system worse.
Ideally you could A/B a parallel universe to isolate your specifc change, but that is challenging.
Alternatively, if there was no Google or Google like company, we would likely be much further along in tech, and have better functioning democracies. They have limited innovation in maps and search products. They rely on being big to be competitive. Their products are pretty poor given their engineering team size. Digital advertising: they bought their way into a quasi monopoly, siphoning dollars from people that actually create things.
Lower population in of itself is a good thing.
It’s the change that is disruptive and will cause suffering in ways that are unique to the suffering caused by over population.
As population growth slows, the younger generation needs to support more elderly. Which means we need some combination of:
Working population being more productive. Population making do with less.
However you approach it, there will be segments of the population that are very unhappy.