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I'd probably do a one-to-one swap for Stanton. I'd *probably* even do a two-fer-one (plus bits from our end) in exchange for Yelich and Ozuna. Paxton's terrifying in every way imaginable. If he succeeds and throws 200+ innings for the rest of his club-control years, he's gone (or here on a contract that could crippled the franchise), and if he doesn't succeed and keeps getting injured then his value plummets. But when he's out there pitching, there's nobody who can lay serious claim to being BETTER at pitching a baseball than he is.
Stanton's got injury problems of his own, but most of those could be ameliorated via the DH slot.