Mary Kirby wrote...
That Sten's crime is unforgivable is pretty much the entire point. It's supposed to be unforgivable.
Letting Sten out of the cage, like sparing Loghain, is more about the player character than the NPC. Giving a man a chance to redeem himself is easy if his crime is minor, or a misunderstanding, or he was coerced. There's nothing particularly noble about forgiving a man who really didn't do anything that bad. It requires an act of grace on the part of the player character to forgive a man who has truly done something terrible.
Which is why you don't have to do it. Redemption is a long-shot at best, and certainly not the most logical outcome. Leave him to die. It's the most sensible approach. It's what he wants, and perfectly valid choice.
You cannot be serious! I mean, first : He is conscious of what he did, and admits it was wrong. Second, even if he's the most logical being on the planet, the one that doesn't show any sentiment (apart to the ever vigilant eye of Leliana), it is even clear he wishes freedom with his last line to the PC, saying the PC to ask the revered mother about it. The way he tells it, or rather, the voice actor, it is clear that Sten wishes freedom. I don't know for what purposes, that is true, if he wishes freedom just to fulfill the task or just because he wishes not to die. My guess is the second one, since without his sword and soul, he cannot go back home.
My theory is this : everyone deserves a second chance, even the biggest bloodiest bastards on Earth. I may be crazy saying this, it might feel idiotic and all, but we must not forget that we are human. Killing someone, or leaving him to death because of a crime is equivalent to the crime alone. 1 death or 800, it makes no difference, it's always an error to bring it, but giving it back does not solve anything. And whatever Stalin may have said, death caused by human hands is still a tragedy, no matter the number.
Besides, you are Sten's writer. You know better than anyone if he deserves a chance or not. Or better, if he wishes freedom or not.