Ehm, the kisses are a small detail in the greater scheme of things and as someone who runs around mostly with spawn (one way or the other) I do not mind that he only has two kisses. I would like the second kiss to have a nicer angle, yes, but if I could choose between the angle being improved for non-tall player characters (because it is a beautiful kiss for tall characters) and having that awful "I will protect you" line changed into something thoughtful. I would absolutely take the latter.
I also don't think Astarion needs multiple endgame kisses, Gale does because he can be utterly suicidal during the endgame. Before patch 6 you might have gotten into a situation in which you had to talk him out of sacrificing himself without previously getting a real sense of how desperate he really is - which was heartbreaking, especially since it is a long dialogue. You might also loose him during endgame and get no happy end with him at all, depending on your choices. So yes, I think it's fair that people who romance the designated sacrificial lamb get some extra smooches here because they have narrative purpose, they aren't just fluff.
And back to topic.
(Edit: Just to prevent the ruffling of feathers, I was also replying to uneven content between UA and AA and I didn't feel like quoting a giant text block.)
