Emzamination wrote...
Isabela is deeply intertwined with the qunari who will undoubtedly be back.Varric...while varric was important because he was a narrator...I can't see him as important enough to bring back.
It's irrelevant whether you can finish the game with her or not.The point is that unless you meet a certain quota on the F/R bar by a certain point she leaves for good so she remains unkillable and even if you give her to the qunari, she shouts her imminent return.
You're making a lot of assumptions here. Just because her story is intertwined with the Qunari and what happened in Kirkwall doesn't mean that she will reappear if and when they do. They existed, and battled with much of Thedas, before she was introduced.
It seems fitting that if you don't chat with her or handle her quests, and thus raise the proper level in friendship or rivalry, that she will leave the party. The PC hasn't given her a reason to stay at that point. And if you hand her over to the Qunari, it also fits her character that she would escape. But her escape, and being apparently "unkillable" doesn't mean she'll come back. It may not be for the purpose of some return to Thedas proper.
I would love to see her character in another game, bearing the same swagger and quick retort, but there's no way I can look at anything that has been said, or how the game was staged, and consider it a done deal.