Castillo is going to be fine behind the plate. His framing has improved over the course of the year, which is really the one big hole in his game. I'd be more worried about where the hell his HR power went.
You guys got me curious about Rosscup, so I looked up his splits. His FIP is 0.77 against lefties with a K% of 47, and a 2.97 FIP against righties with a K% of 32. Drastic split, but it's not like he can't handle righties.
To me, I've got Szczur in the 17-22 range right now and Rosscup outside my top 30. I think a 4th OFer is slightly more valuable than a LOOGY. i guess i think a really good loogy is much more valuable than a blah 4th OF. i think a loogy of rosscup's caliber (assuming his minor league numbers translate) is a lot harder to find than a 4th OF of szczur's potential caliber. Yep, considering Andreoli and Ha have just as much of a chance as Szczur of being a 4th OF.
The Dodgers are getting something close to eleventy billion dollars in TV money. I think they can pretty much spend whatever the hell they want and not give a single [expletive].