I didnt read a whole thread, but I think that farms are a problem, really. The way in which are coaches setted today could possibly fix that problem, because lowleague teams doesnt have enough money to buy coach lvl7 and like that and the great talent to become a national star.
I think that main point is that today national teams are not at the edge of their potential and the time will show to us what we will see in the future, therefore any option to fix that problem.