I would personally prefer not taking slaves in quests, or at least to avoid using that term. Like yeah it is a fantasy game, but that is bad on a number of levels (ethics, optics, etc.). Sure, slavery was different in the kind of period reflected in the game, but it is hard to disconnect the concept today from resonating with American chattel slavery, the child slave labor that happens a lot in some African and Asian nations, and current international rings of labor and sex slavery. Also, the slave who is captured and then aids their slavers also reminds me too much of the American “old south” myths that portray slaves as happy helpers to mostly-kind and benevolent owners (which many people still but into).

I am okay with quests where people are rescued from slave camps, labor camps, or the like, but not ones where slaves are captured (even if the slave is one’s character) and then joins forces with their captors. While this may be too “pc” of a take for some players, I know it would needlessly rub a lot of people the wrong way.