The real question is, do you trade prospects for one slim chance at a one and done playoff run? Or do you trust your last 3-4 years evaluation, which has been telling you that you have a special group of talent, some here, but many more in the 2016 wings, and build a long term contender? I don't even think it's a difficult decision. But say you want to to go for it. You need a catcher, a SS, a PROVEN power bat, two shutdown middle relievers, and an ace pitcher. That's if you really are serious about making noise, not just sqeaking in by a half game as a wild card team. This team has a lot of holes. Bite the bullet, and keep filling them internally. This is not a team that needs a rental player!