I feel that is a general Origin problem. For example I have played both as Astarion and Gale Origin. Karlach's post Gortash rant has not in any way been adapted to either of them. You get the same helpless Tav player dialogue choices (while I am sure they'd have something more insightful to contribute) and she is trying to give survivor's guilt to the the guy who is still very much in danger of exploding himself, or the one who may or may not have just freed himself of his master (depending on when you tackle Cazador).
Well I tried to play as Astarion once. I stopped before act2. It was so disappointing, he had all same responses as TAV. Larian really could add more tagged dialogue options that would fit origin's personalities.
I loved when In DOS2 most cocky answers were tagged as "red prince"
