I know this is about Lewis but I think that is a narrow view. This team has basically been a sub .500 team for the last 3 years. The whole roster, approach at the plate and style i.e. athletic or not needs to be reviewed. Then you look at the roster and say who fits this profile and who doesn't. Who can help be a part of a winning team in a defined role. Move on from those who don't fit. But either go young or bring in proven starters to replace them. The one year stopgaps and relying on AAAA type players needs to go away. They need to upgrade the talent and develop a stronger bench.
It all comes down to wins, if a player is not going to help us in being a winning team find ones who will. Which is why I really hope Zoll is gone in the next two weeks, I don't think he is capable of this evaluation.
If you were going to ask me about Lewis only, I would say if we go young, keep him for another year. If you think he is maxed out where he will be, then move on. But don't bring in a one year stop gap or move Clemens or Keaschall, that is not helping us move forward either.