There are probably still Detroit mobsters around, but the truth is: they have no real recruitment pool in Detroit. After all, 83% of the city is African American. Only 10% is considered 'white', of which a large part would be Middle Eastern and from the Balkans. The Italian population isn't that large anymore and thus there will not be a lot of Italian OC around. I've once heard somebody say that the Albanians, Lebanese and Assyrians don't fuck around in Detroit though.