honestly, i think "objectively" speaking, there never a good ruler these days...whether it's because some part of the country/population is upset, or because the overhaul total population of said country would be upset is another problem (or maybe part of the problem?)
I think the best thing would be if in some country (so they set the example for other one) would implement a system that would "force" ruler to keep their promises, in human ways, like:
- Pay them less depending on X amount of time not fulfilling X promise