The Red Sox managed a 0.742 OPS out of the DH spot last season. That is not too bad, middle of the pack in the AL. For SS, the team OPS was 0.659. That remains the soft spot in the line up.
The hope is that Durbin and Mead will solidify the production at 2B and 3B, Rutschman at C should restore some pop to that slot. Contreras at 1B is solid. The outfield should be fine, both hitting and defense. I guess they view Bauers as bolstering the DH production (we'll see).
At SS, the options are Story, Arias, or bring in someone. Maybe this is the time for Arias with Story in the mix as RH DH, and other fill in opportunities. SS seems to me to be the place to spend some money, if they are going to spend some money, which they may not with the labor uncertainty. With Story, if you limit his on field time by having him fill in as DH vs LHP, and then limited time filling in a SS and 2B, maybe he can stay healthy. Devers could never stay healthy until he became a DH.