True. A combination of the two, I guess.
Ah, yes. I forgot how much Letho explains. Even so, the story from her point of view would be quite something.
Indeed it would be very interesting. I don't know if it can be achieved gameplay wise. I mean Yennefer is a sorceress, she fights in a really different way that Geralt does, and I am not sure if its worth adding completely new game mechanics, for the relatively short time frame that Yennefer would retell her story.
Ciri is a whole different matter, but I am not a fan of the idea that we get to roam around with Ciri for a long time. Maybe just a small part of the game, and always if it helps story wise.