Definitely trade for a decent 1B, and grab a backup from the FA pool. Also, one more closer would be nice. Except for Posednik, there's not much speed though. Possible bench upgrades (over Patterson) could be Hermida, or anyone else available with SB potential. Lowell has the least value, and Beltre had an(other) off year, so trade Blalock. Except for that, the team is pretty good.
Viva la Revolucion!