Originally Posted by Stray Cat
Originally Posted by Walking Kole
I think it's a testament to the writers' abilities that they got us to care for their characters so much that we feel hurt for them. I suspect the way Act III unfolded was out of their control. The game was in development for a long while and the studio was pressed for time.

Now that Larian has breathing room, they're hard at work patching up the missing pieces. They're constantly recording new lines and adding features. They even added a missing cutscene for Karlach's Avernus ending on very short notice. So I'm positive they'll work something out for all companions.
As far as I know, so correct me if i'm wrong, they added it as some quick fix because players kept whining. And they did that instead of doing something actually useful for the game, like fixing the bugged mess act 3 is

If they were actually fixing the endings Shadowheart would have been the first to get something, because she had and still has literally nothing. Second would be giving the player an option to react to what's happening with Astarion, because this is a roleplaying game after all.