Use value is a great way to look at this. But your biases show based on what you ignore.

Citizenship in a country grants access to local jobs of that country. Many people flee more soclist countries where they do have better health care in order to get better jobs in less socialized countries.

Not in all cases. Norway probably has higher total use value than many countries. Individual freedoms also have value to some.

Marketing aside, it seems to me we can look at third countries immigration preferences in order to gauge use value. e.g. the relative preference to immigrate from country X to Y or Z gives us a relative measure of Y and Z. Sure the immigrant might be tricked by marketing, but especially if we look at immigration of those who travel we can assume they are not so tricked.

By this measure many more capitalistic countries perform pretty well, but so do some more socialized countries.

Interesting way to look a things.