If it's me and I'm in charge... I'm likely leaving Devers on 3rd. Yes Bregman is much better defensively at 3rd and it would make the team better. But fortunately for us we have 2B- and probably SS (as soon as Story gets his annual season ending injury) which we can say the same the same thing about. .. Bregman makes us a better defensively anywhere he plays.
Watching most games last year.... I honestly felt like Devers played better defensive then he usually does (albeit low bar). But most games 3rd base felt serviceable. now the middle infield drove me nuts... never felt like we had big league players manning those spots.
Moving Devers creates a weird domino effect- forcing Yoshida into playing outfield.... which makes us worse defensefily. Rafaela, Abraeu, and Duran make up a solid, good defense. I don't want to see them platooned or splitting time as a back up or occasion DH guy.
I didn't end the last few years feeling.... we need to fix the outfield, or 3B... I ended it wanting better D up the middle infield, and more sustained pitching. Focus the roster on those things.
I think Bregman is a better option at 3rd than Devers- but in context of the dominos that would happen (not to mention the drama) I think the team overall is better with Bregman at 2nd.