What about civic and political pluralism? Perhaps good communities need several different types of good citizens (crusty gadflies, eager joiners, caring volunteers, charismatic leaders, peacemakers, zealous advocates); and perhaps people have a right to choose how to specialize.
This is not a point about how different dispositions cluster statistically in individuals; being "civic" may or may not emerge as a single factor in survey data. It is rather a point about democracy and what it needs and encourages. I'd argue that pluralism is basic to liberal democracy--which gives me some concerns about trying to define a civic identity.