Thanks for the info. I was thinking of Skarlet from MK (if her model is available, I'm not sure).Nyl uses one model for his BG3 characters (well, two actually: one female, one futa), so you don't have to swap anything. Unless he removed all unneeded data, I haven't checked.
In any case, you can just link animation data for other models with the same rig, it takes a second. So assuming they use the same armature, you could for example insert one of his Overwatch characters (shudder).