We are still in the 2025-26 off season but the roster and likely line up are starting to take shape. The big question of course is if the line up is better or worse or about the same (line up, not pitching rotation). Below is how the Sox did by position last season. The rank is in the AL by OPS:
POS Rank AVG OBP SLG OPS
C 10 0.223 0.289 0.363 0.652
1B 12 0.244 0.305 0.386 0.691
2B 9 0.241 0.308 0.362 0.670
3B 4 0.265 0.340 0.436 0.776
SS 6 0.261 0.306 0.431 0.737
LF 3 0.259 0.337 0.444 0.781
CF 5 0.263 0.324 0.450 0.774
RF 2 0.272 0.346 0.475 0.821
DH 3 0.272 0.361 0.465 0.826
In spite of some weak production from some positions (C, 1B, 2B), the overall team managed to rank 4th in the AL for overall OPS. 3B was a strong position for production and we lost Bregman, replaced with Durbin (my assumption). Starting the analysis with 3B, the overall team OPS for 3B was 0.776. Durbin last season was 0.721 in his rookie season. You can't expect Durbin to improve enough to match what Bregman did (0.822), but the overall position may not suffer all that much, if at all. Second season, in a park that suits him, Durbin should improve on his rookie season. Bregman's overall impact was reduced due to the injury and he wasn't as good when he came back. DH is unclear, it may be a lot of Duran. A lot of players had DH at bats including Devers. Team DH production may drop.
Now for the positions that should improve, starting with 1B. The team's collective 1B had an OPS of 0.691. Wilson Contreras had an OPS of 0.791. That should result is a meaningful improvement, maybe enough to offset the loss of production at 3B. It may be Mayer who is the everyday 2B or a platoon. Either way, I don't see it as a stretch that the production from 2B improves from last season's 0.670 OPS. At Catcher, Wong was bad at the plate, well below his career averages. Not sure why or if he will bounce back. But it is realistic that production from Catcher could also improve.
The OF was really good last season but should improve. Another year of development for Anthony, Rafaela, and Abreu. Hopefully more health and at bats. Duran also in the mix. Reasonable to expect some level of improved production from the OF overall. I think SS will remain about the same. I think Story can easily match his 0.741 OPS.
Overall, to me, this adds up to a team that should have at least as much production as last season and likely a little more. BOS should be a top 5 hitting team in the AL, in spite of the fact that they do not have any traditional middle of the line up "thumpers". They should be above average at every position except C and 2B.