Hi Fred, how are you? Hoping everything is doing right with you my friend.
The way I see the thing is... You have Betts and Castillo, who are unproven at MLB level. I would go slow with them. Then you have two injury-prone players in Victorino and Hanley. Also, I'm crossing fingers and hoping that Xander and Craig do not underperform again.
All I'm saying is that Cespedes could help you a lot if something goes wrong. On the other hand, if we can get a legit and solid arm no named Leake, Porcello or Latos, use a package around Cespedes to bring that arm.
We'll see how this ends up though. If we do not sign Lester, they will push for Shields aggressively IMO, and probably will try to trade for Hamels or Cueto.
In the end we need at least 2 legit 1st-tier arms to get it done, otherwise we will suffer again with our pitching next season.