Hader is worth more than this. Lutz and Davis are probably close in value, with a slight edge to Davis. Hader is far and away the best reliever in baseball with 4 more years of team control. McNeil is a fine hitter who had a heck of a season for the Mets in 2019 but in my opinion doesn't profile as much more than a slightly above average regular at 3B. No way do I trade Hader for him as a headliner to a package, let alone for straight up value just to fill a current "holes" at 3B and 1B early in the offseason. I'd rather bring back Shaw and Thames for 3B and 1B and keep Hader than make such a short-sighted type trade. I think Hader/Lutz for McNeil/Davis is the right move to make - and not just because McNeil and Davis have five years of control left, and are cheap through 2022. Let's look at multi-year park factors: Stadium A: 92/92 Stadium B: 94/96 Miller Park: 101/101 One of the mystery stadiums is where Christian Yelich used to play half his games - when he was seen as solid, before he turned into a legit triple crown threat. The other is where McNeil and Davis played half their games in 2019. By the way, Yelich's old home stadium is Stadium B. That's right, Citi Field is more pitcher-friendly than Marlins Park. McNeil has a career 142 OPS+, Davis 116. In 2019, Davis posted a 138 OPS+, McNeil a 144 OPS+. By comparison, the two good years Travis Shaw had saw OPS+ figures of 121 and 119. Moustakas, who just about everyone was hoping would return, posted a 114 OPS+ in 2019. With the Crew overall, it was a 112 OPS+. Thames? 117 in 2019, with 106 and 125 in the two previous years. McNeil and Davis are upgrades at 3B and 1B, just on OPS+ alone, before you consider the park factors. One more thing to think about: Yelich's average OPS+ in Miami was 121. In Milwaukee, it's 171. I think going from Citi Field to Miller Park could do something similar for McNeil, who is coming from a higher floor than Yelich. In other words, McNeil would not be a "slightly above average" 3B, I think he'd be a MVP contender alongside Yelich. That alone makes dealing Hader not so painful. That's before we contemplate Davis, who I think would not improve as much, but would still be a very solid addition (think of him in terms of Richie Sexson - for five years). If anything, he could be flipped later when he becomes arby-eligible. Yes, I give up the best relief pitcher in baseball. But the return, I think, is well worth it.