Thank you, "CaliSoxFan..". Although strong arguments can be made that left handed hitters have some distinct advantages, my argument is not based upon that. I wouldn't want an all left handed hitting lineup, anymore than I do an all right handed hitting lineup. Of course, I'd prefer a good all right handed hitting lineup, to a poorly balanced lineup. However, if we are discussing acquisitions, why not try to find someone who could provide "better balance," as you stated?
So, what is so important about "balance". A pitcher can more easily find his slot, when facing a lineup consisting of every hitter from the same side of the plate. Having to pitch differently, to each hitter is made more difficult by the adjustments required to effectively deal with a succession of hitters, who bat from opposite sides of the plate. A right handed pitcher may be very effective throwing his breaking pitches to most right handed hitters. If he faces a succession of them, he can more easily get into a good groove, and just try to consistently maintain it. If he has to face a few left handed hitters, he is forced to use a different approach. The challenge of having to make that necessary adjustment simply places an added burden on the pitcher. That is the reason that a manager will try to stagger his lineup, by alternating right and left handed hitters, where possible.
It is much easier for an opposing manager to manage his bullpen, if all of your dangerous hitters bat from the same side of the plate. By alternating right and left handed hitters, you force your opponent to consider bringing in different relievers, in order to navigate through the dangerous part of the batting order. Absent that balance, an opposing manager can simply leave a reliever in the game, until he reaches the number of pitches, deemed to be his limit, for that appearance.
It appears that almost every position is practically set, for the approaching window of contention. Most of us would be willing to bet that the following players will be starting in 2021:
LF Eloy
CF Robert
3B Moncada
SS Anderson
2B Madrigal
1B Vaughn
C Collins and maybe McCann
That leaves just DH and RF as major question marks. If the Sox extend Abreu, that leaves only RF as a hole to fill. There are several promising outfield prospects, but it's doubtful that anyone will be ready soon. That's why I agree with "Eminor3rd," who suggested adding Shogo Akiyama, if he elects to come to the U.S. Something like a 3 year deal could be a very good solution to the RF problem. Moreover, he would not likely demand so much money, that it would impede the front office's ability to sign the more needed additional pitching.