the whole "my name" thing
Everyone raves over the contrast of Vondas saying "my name is not my name" at the end of series 2 and Marlo shouting "my name is my name" in the series finale.
I don't know if it was deliberate. Even on second viewing, I only ever interpreted Vondas' comment to show how anonymous, illusive and untouchable this group were - "all they have is my name, but my name is not my name" is followed brilliantly by "and they only know me as The Greek. And I'm not even Greek".
While Stinger Bell's around he's talked, can't remember if it's to Prop Joe or Avon, maybe it's to both, about how the most successful dealers in the city's history are the ones barely anyone's heard of, and says something to the effect that having your name ring out is for teenage corner hustlers who are dead by 25.
The Greek and Vondas are a way of ramming this point home, and maybe Marlo's words in the finale emphasise it too, but, as ingenious as The Wire's writers were, I don't think even they had composed those lines for Vondas in order for it to set up a contradicting line 5 years and 3 series later from a character they'd not even created yet.