The government of Iceland and today's US government seem to be rather radically different, yet they are based on the same concept of liberty. Many of the laws concerning what was right and wrong mirror today's laws, so it is obvious that they were at least as liberal as we are today. However, Iceland had none of the extraneous laws that exist today about such things as regulation of vehicles, taxation, or conditions in the workplace. Also, without a central government of career politicians, Iceland was free from this political entrenchment that exists in the US today, where politicians exist only to further their own positions and wealth. Therefore, in these respects, I believe that medieval Iceland was a more liberal society than the one that exists in the US today.
Most nations consider the U.S. to be the freest nation on the globe.
Our society is free from governments that seek to subvert the peoples' interests in order to gain power for themselves. Yet even though this is the case, there are probably an equal number of people in the US who complain about the government as there are in countries with oppressive governments. I believe that medieval Iceland actually did our society one better with their form of quasi-democracy. They certainly had more women's rights early in their history than did this country and there seem to be fewer complaints in the saga about the governing system in place then than there are now. All this leads me to believe that the system that the medieval Icelanders created led to a far freer society than we live in today.