I haven't seen this mentioned yet... But it's been bugging me for a while that Gale, Shadowheart AND Karlach all have near-identical recordings of Shar devotion. The first two, I could imagine, but I never got the sense that Karlach was the sort to lean that way. (I could well be wrong, we've seen so little of her)
But, what if it's the Nightsong encounter that causes you, and some of the more susceptible members of your group, to turn to her? And that it's only by not using the tadpole at all that makes it impossible, while also allowing you to break Shar's hold over the Nightsong? It would explain why Wyll doesn't have any of these voiced lines, because his soul is already contracted to the Hells/a cambion. I'm not sure about Lae'zel, perhaps she really is as special as she thinks she is, or her faith in Vlakith is just that unshakeable.
It wouldn't be that awkward to implement. The way I see it, we'll just have to roll another check at various points where Shar tries to assert her control, just as you must make a roll on perception checks once you get hag-eyed, or the wisdom checks we already roll on, constantly, regarding the tadpole or Absolute. And it doesn't always have to be a quote-on-quote "Bad" decision. Eg. it could be the only thing that keeps Astarion from betraying you/allows Astarion to resist his master's pull (considering the possibility that he already IS contracted to the Hells.), just as Hag-eyed may be the only that that gives you a guaranteed save/perception check on a roll later on.
Almost all of theories I've seen, and the ones I've had knocking about myself, have been operating under the assumption that there are limitations to the amount of branching plot points that a the three-act story structure can manage without becoming ridiculously inefficient to game development... What if this is simply isn't so, at least in the case of the Nightsong/Shar/Dead3/Illithid/Infernal/Alaundo, because we're assuming that we are special/chosen/protected, and what we "want" is always going to be honoured over what we "chose"?
Last edited by Qin; 15/11/20 12:23 AM.