I think the last line is the key really, will the degree of luck they need (that anyone needs) to win an All Ireland come before this current good squad start to break up. But they have two or three years before that becomes a real issue.
They probably do lack a bit of composure, but so does any team who haven’t actually won it really. But I would caution in Dublin’s case, that if you took Connolly’s impact on the last 15 minutes of all our tight games v Mayo or Kerry, we would have lost more of them then we won. So possibly all Mayo need is one or two guys with the right skill set and the right composure.