Chapman and Jansen aren't going to get huge bucks because of a closer label though, or if they do it's like 5% of the reason, it's because they're really really good. Since most teams are bright enough to catch on, that means that really good non-closer relievers are going to see their trade costs rise too. Like Colome for example, I really doubt that Soler alone would fetch him in trade. That said, it doesn't scale all the way down(e.g. Justin Grimm isn't going to give you somebody's starting CF), and if you want to try to get ahead of the next Miller or Jansen by buying low, there are ways to do that. The problem is that those come with much greater uncertainty, and the back end of the Cubs current bullpen has a ton of uncertainty. If Rondon hadn't gotten hurt and had been healthy through the playoffs I'd probably feel differently with him, Edwards, and whatever you consider the current version of Strop to be. But there's a significant chance that Rondon the elite reliever is dead, and by not going after one of the (several!) elite but expensive relievers available we'd be risking on a Giants-esque derailment of 2017 that I'm not comfortable with. I'm thinking more in response to the "Both Jansen and Chapman" or even the "Both Jansen and Cecil" train of thought. So, I'm all for adding Jansen at the top, but then filling out underneath through trade. Just as an example, I wonder how well the Cubs and Astros line up for a trade this offseason. They could really use a bat like Soler's for OF/DH and they had a deep lineup of really good relievers this year with Devenski, Harris, Giles, Gregerson, Feliz, Neshek and Fields. I wonder if they would be open to a Soler for Devenski swap. I'm also pretty fascinated with David Paulino, though the front office may back away because of his off-field issues last year. But I would be very interested in targeting a Soler + ? for Devenski/Paulino.