Don't sleep on WCS. Elite defensive bigs are extremely, extremely valuable. You look at guys like Duncan and KG, they cause their opponents to score about 7 points per 100 fewer over the course of a long career - and even better than that during their peak. No player, not KD Lebron or Kobe, makes a 7ppg impact on offense.
Even if he isn't quite a KG or a Duncan defensively, and even if he is a minus offensively, WCS can nonetheless be an extremely valuable player in this league. He'll never be a 20ppg scorer, but I think he'll have a very good career as a defensive specialist.