Vampires in D&D have always been subject to some genre mishaps. Gothic horror plays by different rules than high fantasy, I think a lot of the 'rules' concerning vampires are there to exist in that context, so they might be less sticky in a more generally-themed campaign.
I also think that the newfound autonomy Astarion has from his master are the reason he acts the way he does, he seems to be interested in only maintaining that freedom whatever the cost. It would also leaves open the possibility for his personality to develop into different directions which I think is what they're going for, tragic victim who becomes either the villain or a better person. That's what I've thought they were doing anyway.
Last edited by Sozz; 22/05/22 06:32 PM.