Looney: Sure, our USMNT could use the individuals you describe. My question is: How do you best develop them?
Soccer/Football is a "total" game. We don't play 2-platoon, plus special teams, plus situational substitution (like American football). We must be able to play with and without the ball -- offense, defense, set pieces, etc. The game demands intuition and understanding of all roles to best advance in any single role.
Sure, in time, at the highest levels, a group of guys excelling at specialized role can be advantageous. My questions is: Is EARLY-AGE specialization the way to get there?