Nobody "designs" institutions. They are fought for by factions within the societies. The idea that some benevolent hand will come up with a better design is simply an absurd non sequitur. If there is going to be a significant change to the system, one which alters the political landscape, it is going to have to be fought for. And it will have to overcome bitter resistance from all those who benefit from the current order. To suppose otherwise is to engage in a pure flight of fancy.