Estinien (spoilers)

[Lorielle]

Remember the thing about souls with the Echo, though. While she probably can't recover her physical body, her soul is eternal in a different way than most mortals. I suspect she'll be able to help Estinien return to his former self, even in her current state.

By bringing Nanamo back so fraking easily, they've kind of turned this into a setting where no major death can be taken seriously.

However, that is more believable about Nanamo's "revival" in how it was done(though it was silly), Iceheart's condition is MUCH more complicated than swapping toxins. While she was a plot device, she isn't necessarily one of the "bigger roles" of the story such as the scions and all. So I don't see the group going out their way to get Iceheart if there was even a way. Even if that soul may be eternal or not...It's really not the same as her actually being there. :x

[Viridiana]

While she was a plot device, she isn't necessarily one of the "bigger roles" of the story such as the scions and all.

Honestly, I feel she's had a bigger role than Nanamo. When Nanamo was poisoned I only cared at all because she was a head of state and some things just aren't to be done. I had no personal connection to her at all. It may be different for people who started in Ul'dah, but for me there was no sense of personal loss. By comparison, it's been 4 days and I'm still kinda sad about Haurchefant, and my feelings about Ysayle are tempered by the knowledge that she has the Echo and "died" off-screen, so there's a decent amount of wiggle room for her to come back. Estinien was starting to grow on me, so while I don't feel his loss as keenly, I'm still interested in getting him back, which I suspect will involve separating his essence from Nidhogg's somehow.