I've been wondering about him for a while now. Why do we never really look at him as the second baseman of the future. He seems to me like a super speedy dude that plays Darwin Barney-like defense and walks more than Barry Bonds would against Carlos Marmol. Even with a hit tool that is questionable, he still has above average speed, fielding, and arm, and has superb discipline, something nearly unheard of from lower-level prospects.
I guess my question is why Cubs fans and minor league gurus simply overlook him? Is is because I'm really overrating him as a player or because of something like age, etc.?