I always stay out of the Cubs thread but...
You cannot deny the talent/potential of Castro and Rizzo and maybe even Jackson.
Although, I think the Cubs front office messed up calling Jackson up as soon as they did. Now Vitters may be a bust. I feel like he's been in their system for ten years now anyways. As someone already noted, until they have frontline starting pitching they're not going anywhere.
I still cannot believe how easily the Cubs got Rizzo from the Padres. We should make a trade like that. Andrew Cashner? Really? Probably the Hoyer-Padres connection.