Well, only people who feel that they have to save Triss, will be unhappy. But quite a few of us do not like her, because she was at least lying and withholding info from us from the beginning (Triss' conspiracy theorists like myself believe it was much, much worse). I am with OP about Saskia, and so on Iorveth's path there was no good decision for me but not because I wanted to save everybody, but because I did not feel like saving anybody at all.
On Roche's path I was adamant about saving Anais from Dethmold. That the girl saw her father being killed, really got to me, and from the very beginning I wanted to help her somehow, and to keep her safe. Plus, it does not interfere in any way with Nilfgaard's plans, and gives the most positive outcome for the Nilfgaardian delegation. So for me CDPR gave a perfect ending. />/>/>/>/> ›››