Just finished my first play through. Karlach is properly is the most lovable character in terms of personality. So her ending is quite unsatisfying in both emotion and logical terms.
Personally I think her story/dialog is really good, especially the ending of her personal quest and right after the final battle. You do have to make a few choices to have her not dying right there. I went out of my way to search for solution and went back not sure how many hours of saves(I think I re-do half of act 3 or even more). Before this I tried so hard to only research non-story related stuff. Then I broke the rules for her.
I kind of accepted the no dying ending after the battle.
But in the epilogue, when emotion subside, I couldn't help but question some logic:
Six month after final battle ...
Gale ascended to godhood. Couldn't he do something? Seriously?!
Rolan was in charged of Sorcerous Sundries, and he couldn't find a single wish scroll?
With the above said, it doesn't have to be getting her original heart back or a complete fix. Just stabelize her heart enough to stay in Faerűn without exploding. So they don't have to go back to Avernus anymore. That should be a very "low" request even for a wish scroll.
If this happen on a table top game, the table properly will be flipped, LOL!!
PS:
My Tav romanced Shadowheart. Why she didn't go with Tav? And no good bye kiss?
There was even an option for Tav to go with Karlach without Wyll. But no option to bring romance interest(s)?
And finally, I choose to go with Wyll and Karlach. Then in the Avernus cut scene, Wyll wasn't there!?
