I love the concept of switching Govs. I agree with you. I too believe people do better when we work together. A common cause indeed has a way of bringing people together. It would be nice to live in a country where its foundation was built around an idea of helping each others. However I am not referring to a communist community. I do not see that working out but this post is defiantly food for thought!
RE: Key criteria of the perfect form of government: nothing, anarchy, voluntaryism, intentional communities, democracy, republic, trade organization, etc.