One thing that really bugs me about her Avernus ending is that there's no option for the *whole party* to accompany her to Avernus. I can't think of a single party member who (on their more good-aligned path) would balk at going to Avernus to help out Karlach (maybe Lae'zel, given that leading the Githyanki revolution seems at least somewhat urgent).

Yet in my most recent playthrough (romanced shadowheart) the game only accounts for Tav, Wyll and Karlach returning to Avenus...even though Gale was *just* waxing poetic about how fond he is of our group, and how he wants to see what we'll do next. To say nothing of the fact that shadowheart had literally no reaction to Tav disappearing off to Avernus without her.

Overall it just feels very sloppy.