I think Tro is a solid player. His FO prowess is big for us. I still maintain I don't see major differences between him and Strome or Copp, even if I do think Tro is a little better I think they are all in the same boat give or take. I have no issue with him, but you see it he just doesn't finish well. That has been his career for the most part. Really solid player, # 2 type C, if he could just finish better/take advantage of his many chances, he'd be another level up. But he struggles there.
As for the PP, I think adding a shooting L over Tro is a big plus. Yes Z may not be as good on FO's, but overall I think the swap of Tro to Tara would be a positive for the slightly stale PP.