Not a bad trade. But to play the wet blanket along with queen BTS and creepy old man Hurl, let's look at ways it can go wrong: Tulo's injury history catches up to him and he's on the DL or plays like crap. He's also signed thru 2020 with a no trade clause. So he could very well become an albatross. Hoffman could discover how to strike guys out, Castro is properly handled in his development and becomes an impact arm.
So this is what wet blanketing feels like, kinda fun.