You need some goal to correctly target that "wisdom of crowds". So first we need democracy to set the goal: Gini-index vs. Pareto efficiency. Freedom vs. security. Protection of personal rights vs. right of group self determination.

Then throw into the equation some very polarizing stuff like abortion, drugs, animal welfare, inheritance tax, immigration and whatnot. Then watch as some political entity loots government budget while people are arguing. This happens in Finland too now that Russia is weak.