The question remains Aurelius, will Argentina produce a squad good enough to lift the WC?
Do you mean this summers u20 World Cup or the one in Brazil in 2014 ?
Regarding the latter the attack is functioning well and the midfield has improved significantly. The fluidity of the side is greater, there is more confidence and togetherness.
Defence has been relatively solid and has improved in terms of defending from the front and pressing as a unit. Yes there are still concerns about the goalkeeping and central defensive positions but then again few national sides have a world class defence at present.
It does all hinge on Messi though. If he is fit and fresh in 2014 I can see him being the ingredient under a competent coach in taking Argentina to the semi finals. Beyond that is anyones guess. A little luck will be needed too.
The main threats are the obvious ones. Spain, Germany, Brazil and France. Holland and one or two of the other South American teams will also be on the fringes.
If the u20 qualify they have a very good chance of doing well in Turkey.