To call Yelich a cheapish All-Star really understates his value. There are 68 All-Stars in baseball every year, Yelich is at the very upper echelon of those players. Yelich is one of the top 2-3 players in baseball. He was the league MVP last year and is having an even better year this year. He will very likely go down as one of the greatest Brewers in franchise history. So you're not comparing those 4 players to a cheapish All-Star, you're comparing them to a cheapish MVP. And secondly, we are so far away from those 4 being even replacement level MLB players, much less above average MLB regulars. (And I realize you didn't say otherwise). Harrison and Diaz have had nice seasons so far after both disappointing in 2018 in the minors. Yamamoto has had one career MLB start, Harrison and Diaz have never even stepped out onto an MLB field. MLB is littered with pitchers who dazzled in a debut and then fizzled, and littered with players who performed at a high level in the minors but couldn't translate that to the majors (Lewis Brinson is one of those guys, so far). The odds of all four turning into above average MLB regulars is incredibly remote. Not impossible, but very, very remote. Just go back to our top 4 prospects from 4, 5 years ago and see how many of them turned out to be above average MLB regulars. I am not saying the Marlins did poorly in this trade, and I have no reason not to hope that all four do well in Miami. There doesn't have to be a loser in the trade. But I mean, comparing Christian Yelich to the likely trajectory of our franchise on holding the 4 prospects instead, it's not even close. We won a division title last year and came within one game of the World Series. We are highly likely to have back to back playoff appearances for the first time in ...ever? I don't know. We have a very good chance of being a perennial playoff team for the next 3-4 seasons, minimum. All of those things have incredible value to our franchise, and there's no way we're even sniffing the playoffs right now much less competing for the NL if the Yelich trade never happens. And barring the highly unlikely scenario in which one of the 4 traded to Miami turns into a star level player as well, we probably aren't getting there anytime in the next few years with the 4 we dealt.