I did not think Peavy was an essential element of our 2013 ring, but it is debatable.
Iggy has more or less flopped with Detroit, perhaps due to injuries, so the comp is not exactly the same as what the Espi comp may be.
I get your point about Pomerannz not needing to do great to make an impact on the pen, but I'm not one that values immediate gratification over the longer view.
I get the risk/reward factors associated with both of these guys, and I realize I may be higher on Espi than he deserves, but I look at 4-7 years of team control vs 2.4 and I have a hard time balancing that out.
It's not about Pomeranz, although there are risks associated with him too. I don't mind waiting for greatness. I don't mind the fact that sometimes these guys lay eggs. I don't compare Espi to Casey Kelly, Bowden, Owens, Johnson or TBall. I know he is far away, and that adds to the risk, but this kid has done so well vs players much older than him, I feel his upside is higher than many think it is.