I think that this sums up my feelings very well too. I am actually stopping all playthroughs at the start of entering the Lower City Currently. This is because if I complete my Durge quest and Astarion's it feels like the emotional investment *ends* because reactivity *ends*. Not just for him, its surprisingly quiet in Act 3, when its literally the denouement and climax of the story. I should be getting yelled at by everyone at every moment, finding companions perhaps taking time to themselves. Anyways its a moot point
Im much more cynical about Larian listening to feedback than most folk, I will admit. Yes the patches are nice good will but the fact that these endings and Act 3 passed QA boggles my damn mind
Yes! It's so quiet after you complete their personal quests. I miss the amount of conversations that would happen at camp. There's just nothing now. There are so many scenes that I feel like should be getting at least some kind of a reaction, or like you said cut scenes discussing what to do or something. It's the big finale and it just kind of fizzles as far as the characters themselves go.
For instance it baffles me that after the scene with Haarlep you don't get any reaction from anyone in your party, much less Astarion. I know something can triggor later if you sleep with him, but to have no reaction afterward, after everything with his character's personal story? It doesn't seem in character.