Now that I've played through the new epilogue with AA and watched alternative options, here are my observations:
1. I'm conflicted about the new animations for post final battle private chat. They look more fluid and Astarion doesn't look as stiff with hand gestures but I think the frequent close-ups on his face are a bit distracting, especially since in some of them his skin looks extremely pale compared to other shots. I also miss the little head bow after selecting 'I wouldn't want it any other way', his cute smile when he says 'that makes US the most powerful people in the world' and I preferred it when he closed his mouth after the laugh - now he looks a bit derpy as the screen blackens. I like extra smugness on his face when he talks about the power and his newly added smile during the line 'true... freedom'. Tav looks happier too and doesn't cross their arms like before, which is a big plus.
2. The intro made sense for my choice (staying in Baldur's Gate) but it doesn't after selecting the option to travel together - the narrator should say they received the letter while staying somewhere and you simply changed your travelling schedule to attend the party.
3. I LOVE his outfit during the celebration, though I wish female Tav would arrive wearing a robe or generally something more feminine.
4. Astarion turning into a bat and flying around spying on people is adorable and hilarious!
5. He can see himself in the mirror! Finally! So happy this was included!
6. 'I may have power, but it would be nothing without you. You complete me. And together, we are unstoppable. So Heavens help the fool that tries to get in our way.' - amazing lines!
7. 'I will be watching. I am always... watching.' - Yandere Astarion, haha, he is delightful The way AA pronounces that last 'watching' does things to me. Neil Newbon knocked it out of the park once more. <3
8. I like how he's thoughtful with the 'We have en eternity for chit-chat, my love. The others only get you for tonight. I can't keep you all to myself', as well as other lines and yet still making it clear the power dynamic thing is not gonna go away if Tav can express doubts about the relationship flourishing. It shows that he doesn't see Tav as a slave, but that he's obssessed and very protective of them.
9. Please give us an option to kiss AA, only him and ascended Gale don't have have any intimate options. It would also reflect the lustful tone of the relationship, while spawn has a hug to higlight the romantic tone. Taking into account how he enjoys that others see them being happy together, I'm sure he wouldn't mind an extra show of affection.
10. In the OP I was suggesting a possible scenario for mortal and spawn Tav who rejected him, but I'm happy with what's in the game now. Although some extra angst might have been interesting, I think I actually prefer it that he calms down even more and is civil with Tav. He doesn't even get triggered anymore if he's compared to Cazador. It shows character growth. Though, seeing how much he misses Tav, his talk about seeing them again in the future, etc. I think Tav should have an option to suggest getting back together. I think there should have been some differences if they stayed as partners in crime as well. Then they could indicate that it's not the first time they see each other since the original ending.
Overall, I'm quite pleased with the party scenes. He is still the arrogant, magnificent bastard I love. Just please add that kiss option and a line asking Astarion if he'd like to get back together if he was broken up with, and then I'll be completely satisfied with the epilogue party.
I support you, especially about the kiss. I'm sure he'd like to do something revealing. Although I'm not sure about the clothes. There is a wardrobe in the camp where you can change clothes. I think they made a beautiful gender-neutral costume. But if you don't like it, then you can go to the chest and choose any other one. Although I would certainly like a unique costume, but in this case it is the same for everyone, even if you appear alone.