If you drop Werth from the lineup who do you put in? Extend Span and put him in left? Please don't say den Dekker or Moore. They would have to eat almost all of Werth's salary for some team to take him and I'm not sure that too many teams would want him either unless he goes to the AL and becomes a DH. I really wanted the nats to get CarGo from the rockies. sigh. The nats have a decent amount of young arms in the system, but lacks a lot in the position player area and after TT gets called up and is in the show for good then it's really bare for top prospects.
I'm not advocating for this, nor will it happen, but if you bring back Span, Taylor in LF would be a pretty nice option there and would allow for Turner to ease into the lineup rather than be expected to carry the load from day one. I don't think Werth is terrible if he can stay off the field, I think he brings a lot to the team, actually, but I wouldn't mind this option at all.