I'll play
C: Wong obviously has played well. Maybe keep Teel at AAA and add some veteran flotsam. At the same time, with Teel being a LHB, doing the platoon thing is fine.
1B: Casas is worth extending
2B: Grissom at least looked in September like a big league caliber something. Campbell is fascinating, but he made such a leap so quickly keeping him at AAA is perfectly okay.
3B: Devers
SS: Story. Probably can't trade him for a good return. But he had a solid season when he was healthy, and I do admire the leadership he showed actually working to come back this season.
CF: Rafaela. Maybe he will learn how to take an extra pitch or two, but the defense in CF could be elite.
LF: Duran is a terrific player. I'd be tempted to sell high though.
RF: Could be Anthony. Could be Abreu with a platoon partner. Abreu is another guy I'd consider in trade.
SP: Honestly, my first call would be to Miami to see what it would take to land Sandy Alcantara. Yes, he is coming off TJS but might be worth taking the plunge anyway. His deal is good for a top starter. The free agent crop for pitching is meh. They can also look to the White Sox as well for Garret Crochet, but I am not sure there is a price match, unless they are willing to move Mayer. (and to me that is dependent on how the team views his medicals)