The whole OF settles down when Span plays CF. Taylor seems fast and elegant, but not quite sure where to play before a pitch and how to play when a ball is hit. Taylor is a fine LF, but CF demands more than he's got now. Maybe in a few seasons, but now he reminds me of the year that Harper played CF: superior speed and arm, but a little shaky.
Hitting? I prefer the current Span to the current Taylor, and the current Taylor to Werth as he hit before being hurt. Yes, Werth ought to return to something like last-season form eventually. Can't guess how long "eventually" will be. A reasonable guess about next year: Werth will have slipped a little in fielding and hitting, and Taylor will have improved.