Since I stayed clear of meta knowledge during my playthrough, I guess my (gith necromancer) Tav was influenced by her companions and followers a lot! It was almost as much fun getting to know the character I was playing, as was getting to know the others. As a DM, it was also valuable to see how the Githyanki narrative had developed since AD&D 2e. When I started, Sava was supposed to be a brutal astral raider who got caught up in the whole thing. Teamed up with a
vampire and an evil priestess, Sava's journey seemed slated to become a bad-does-good kind of story, but this lasted until we ran into Wyll, Karlach and later Halsin. My in-game explanation for Sava getting soft (for a githyanki) was the connection to her good-aligned allies through the "tavpole" which itself seemed to have a personality as well. As if sometimes the voice, that was speaking from Sava's mouth, was not her own. This slightly schizophrenic state manifested in Sava bringing brutal strategies to the lance board, but then often softening up tactics, much to Astarion's dismay. Sava's excuse to herself was that wisdom and a broad roster of allies was a more effective weapon than sheer power.