As I said, I think they are probably comfortable with Nava being that guy in any short term scenario, just as they were this year. JBJ didn't come up every time Shane was out for a day or two.
I agree they would like to upgrade defensively if there is a long term injury, but don't think its a big need at the major league level. I agree with you that a 3rd good defensive outfielder would be nice, either in AAA or on the 25 man roster. But I wouldn't make it a huge priority to carry an All D guy just to have one around, or pay big money for it. They can address the need you're referring to by trading for a defensively oriented player to stash at AAA, but just because they had the luxury of JBJ in AAA this year, that doesn't mean it's an absolute requirement every season.
As to the trade Nava idea, I suppose it depends what you can get for him. I think he still has a role on the team as a jack-of-all trades OBP guy who can play multiple positions. I agree, hitting right handed should be kept to a minimum. Fortunately for him, most pitchers aren't left handed.
I agree they would like to upgrade defensively if there is a long term injury, but don't think its a big need at the major league level. I agree with you that a 3rd good defensive outfielder would be nice, either in AAA or on the 25 man roster. But I wouldn't make it a huge priority to carry an All D guy just to have one around, or pay big money for it. They can address the need you're referring to by trading for a defensively oriented player to stash at AAA, but just because they had the luxury of JBJ in AAA this year, that doesn't mean it's an absolute requirement every season.
As to the trade Nava idea, I suppose it depends what you can get for him. I think he still has a role on the team as a jack-of-all trades OBP guy who can play multiple positions. I agree, hitting right handed should be kept to a minimum. Fortunately for him, most pitchers aren't left handed.