I'm very glad to hear the dock scene is being altered. It just felt so weird. I wasn't romancing Astarion the first time I saw it and even then it felt off.
I agree with the people saying that the 'good' ending isn't very good from unascended Astarion's point of view. He gets vampiric hunger for all eternity, while his friends grow old and die, eventually leaving him alone. I would like to see him taking more control of his life at the end, either choosing to remain in the shadows or pursuing the idea of a cure.
The romance with unascended Astarion could also do with a lot more love. Ascended Astarion got 3 kiss animations with patch 6 and while I find them problematic because Tav seems so miserable, unascended Astarion could have done with a similar amount of attention.