Regarding my answer to an argument of practicality vs morality, I think I have already given an answer in one of my previous posts. In my opinion, we shouldn't apply ethics framework to governments or states, that is, we shouldn't measure them by moral standards, but rather stick to effectiveness or expedience criteria...
Okay, what metric shall we use for effectiveness? I would say we should use freedom/liberty as our metric. That again gives us anarchy, succeeding at 100%.
The selection of the metric that you're going to use to measure "effectiveness" is going to be, inherently, a moral issue.