I think Chriss was badly miscast in his first three seasons as a "stretch four" and is just now at the ripe old age of 22 realizing that he has all the tools to be a solid NBA center: great nose for rebounding, athleticism, timing, and hands, good defensive switchability and shotblocking, plus a lot more toughness, hoops IQ, and passing skills than I had ever imagined. As his 3fga have dropped from 5 per 36 to 1.5, his efficiency has leapt from subpar to well above average.
I really hope he sticks around, but in a scenario where the Warriors had to cut him to guarantee Ky Bowman's two way deal, I'd jump on him if were Danny Ainge. Hot take alert, but I wouldn't be shocked if within a few weeks under Brad Stevens he became the Cs' most dependable center.
Cauley-Stein has been playing better the last few games, too, but if push came to shove I think I'd keep Chriss and move WCS for a 2063 third-rounder or something.