I'm probably rehashing some old topics, but I've been away for a long time. I think the Sox have definitely improved at 3B, 2B, and C. Even if Avi comes back as the RFer, I think he would almost certainly have to have a better year than he did last year. I'm not sure if spending big money on someone like Fowler makes a lot of sense. I'd rather give Avi one more year to prove himself and just give the job to our best prospect if he doesn't cut it.
I don't have a lot of confidence in Saladino to be the every day SS, so I think the Sox are downgrading at that position. Ramirez didn't have his best year last year and his best playing days are definitely behind him, but I'm still not sure Saladino can be a solid SS at the Major League level.
I'm glad that the Sox didn't trade Quintana in the offseason, so I'm okay with the loss of Montas and Thompson. A top 3 of Sale, Quintana, and Rodon is pretty solid. Based on Danks salary, he likely will get a starter's spot, but he hasn't really pitched well enough to justify that spot, in my opinion. Hopefully he does better this year. I think Erik Johnson will be a pretty solid #5. Hopefully Fulmer will be ready to contribute after a few months.
Overall, I'm optimistic that they will improve from 2015, but they will really need some breakout performances from somebody to challenge for a playoff spot.