He's actually performed at a high level before, none of those guys have. Career ERA+ of 112. You might be lucky to get 100 innings of 90 ERA+ out of any of those other options. Miller might be able to give you 150 inning at 100-110, and it wouldn't be ridiculous if he gave you 190 innings at 120 ERA+. What makes Miller more likely to be good than any of the younger guys? The Cubs made the playoffs the last time he threw a full season, he had major rotator cuff surgery, and he was terrible in his brief stint in the majors this year. He's done it in the past, but he's not the same guy he was when he was successful. I'm not saying he's very likely to be good. But those kids are almost locks not to be good. They all sucked last year, and none of them should have, or would have, been in the majors anyway. Miller is probably a better bet to be good. But it's not an either/or situation here, and I don't see why you are trying to paint it as such. Miller should be viewed as another option in a big batch of other options. He's probably ahead of the rest as of this very moment. But hopefully they'd be more than willing to go to somebody else if another person proves more reliable. FYI, Miller had an ERA+ of 101 in his brief stint this year.