I don't get this trade for the Dodgers at all. Sure, Seo and Navarro are "expendable", but is Hendrickson that much better than Seo? I don't even think Hendrickson is the better pitcher of the 2. Hall is definitely an upgrade over Navarro this year but are they going to bench or platoon Martin? Trade him? Why would they want another catcher back? I know Hall has always been hyped as one of those breakout candidate before every season, but he never does and probably won't. Navarro was a pretty hyped catching prospect a couple years ago(probably mainly because he was a Yankee) and has certainly fell short of expectation. But the Dodgers surely can trade those 2 for something more...useful to them than 2 aging players.
Are you interested in joining a 28 teams dynasty league? If so, PM me.