I follow Dublin hurling but would never claim to have a great knowledge of it but I think two things have held us back, one fixable, one critical and that's consistency and forwards. I don't think you can coach great ability into a person, it's inate so I don't think thats the issue.
Consistency can be fixed but any county will only produce a small cohort of elite players and the loss of serious underage forewards to football is crippling.
Dublin will never make the next step in my view until that trend stops due to simple maths and the idea you will never mould an elite forward.
Granted we havnt won underage but have got to numerous finals and we will eventually get there. But in senior bar a freak year we havnt ever really looked like wining material and I don't see that changing. We will get good days again due to the vagaries of sport but to beat 3 top teams in one championship is almost impossible without top class forwards.