For LHB, Fenway Park is ranked 2nd in Park Factor. Oracle Park is ranked 27th. Even though CF and RF is "shorter" in SF, it is less HR friendly (27th for HRs too) than Fenway for LHB.
Masa has played in 35 games. Asking how they'd fit Devers into the lineup with the 4 OFers is a bit silly IMO. They've figured it out for a guy OPSing 609!
They aren't going to be able to invest that much on the rotation unless they are having someone take on Masa's full salary. Why block a cheap Tolle for a mediocre Keller that would cost a decent return in trade?
They have 4 OFers with 3 bWAR. Anthony clearly has the highest ceiling. Rafaela is one of the top CFers in MLB.
Number of times Jarren Duran as been above 800 OPS this year: zero. Abreu has had a few injuries this season and seems to be a streaky guy.
If they are comfortable playing Roman in RF, I'm fine with trading either Abreu or Duran this offseason if they want to. The return may be less exciting than people on here think though. I'd consider trading them for prospects too.
Also, I haven't heard much mention of Henry Godbout, but he had a 1053 OPS before ending the season due to injury. My guess is he'll start next season in GVL again, but he seemed to not struggle too much there so far.