The patch 5 kiss is fine, it's the new patch 6 one that has the odd angle for same-sized Tavs. They gave the patch 5 a more dramatic angle for the evil ending too and made it look a little more extra. I quite liked it, a good triumphant kiss before conquering the heavens.

Besides, not matter how it looks for Karlach now, my position on the AA kisses has been and is, that they are too much and are too extra for a normal rotation. So for Astarion to look at Karlach's neck first and then taking the red stuff from her mouth instead makes narrative sense once, for that specific character at that moment. I also thought it was interesting as a "this might be our last chance for a kiss" option - I got it with the old expressions and it was the first kiss Astarion gave my character after ascension. So that was fine too. In a rotation they are all too extra for my taste and personally, I also have a problem to see them romantically because of Astarion's expression and the lack of aftercare. Just as an explanation for why I would not want any of them for the spawn route. ^^