Also want to add that the MC starting to go after him but being forced to stop and run after Karlach doesn't rectify the situation at all. It's an unnecessary forced choice that won't make sense for a lot of players, and it would be really obvious that it was only there because they didn't want to create a new scene. I say it's unnecessary because Astarion is literally right there even though the player can't see him (bc they didn't bother to check) and they can extend his scene for a minute longer before the scene with Karlach plays.
I don't know if they're allowed to add new voice lines at this point because the deal with wotc is ended, but a cinematic of the player going after him and making sure he's okay where he is for the moment before they check on Karlach would be enough. Maybe they hand him a cloak or something. It would be nice if it was voiced or if there was a brief dialogue option for the player but again, I don't know if they can do that legally now.
It's also obviously something they can do fairly quickly since they added in the scene with Karlach in Avernus like two weeks after people complained/asked for it.
