The Lord requires us to conform to his laws. We are to keep his commandments--all of them. We are all expected to live in this way. With this high level of conformity as a requirement for all, where is the opportunity to be unique?
Actually, not keeping the commandments is what makes a person not unique. People are naturally good at breaking commandments and doing whatever they feel like doing. When someone breaks commandments, they are acting just like the majority. That is why throughout time the Lord's people have been considered "peculiar."