You should never bank on a career year from anyone. That's a bit ridiculous. I'd be willing to bet that none of them have career years. However, if they can just play the way they have been playing, even with a slight decline, they will still be productive.
How do you know that they won't be good? That's literally impossible to say. Hundreds of variables.
.280 is like a .305 OBP for Barney. That's terrible. DeWitt can do much better than that.
I think that we are fine at SP. Like you said, if our SP can stay healthy, but I think that next year enough of our pitching prospects can be ready enough to be a 6th starter in case of injury. I'd much rather see money spent elsewhere.
As far as 2B is concerned, Kelly Johnson is pretty easily the best option there. With Johnson, it allows us to have like DeWitt and Barney or LeMahieu as utility INFers, which would be such a big asset to the team. I feel like one of Baker or DeWitt will be gone, though. I think that this team values Barney too much. Although, I suppose we could see a bench of Baker, DeWitt, Barney, 4 OFer.
I'm perfectly fine with Ramirez as long as it is not for 16 million. He can continue to be a decent 3B for us for a couple years, so let's sign him and hope that Vitters can find it or that Lake will be ready.
By the way, you're an awesome poster! Hope to see you around here more!