This (Casper) was one of the quests I liked, because it didn't reward me when I RP'd in the "right" way, for me. The only reward you get (an animation and, if it's the first time you did it, an achievement) is if you take the evil path. There's no reward or acknowledgement at all for deciding to let Casper live, just as, in another quest,
if you choose Hermosa, there's no reward for letting Saul live.
I really liked that I wasn't shoehorned by the rewards into always taking the "good" path, as is so common. Instead, the rewards attempted to reward the evil option, which made taking the evil option "nicer". It's the same in another location:
the Mysterious Cave: true evil seemed to pay off better than true good (you get better prizes through the cave, and some dragon armour, and no penalties, as well as the other rewards appearing roughly equivalent: has anyone checked to see how much better/worse they really are?). But still, I chose the "good" option.
I liked this, because it let me exercise my own gaming morality rather than feeling I was being railroaded into it, or feeling I only took that path because it made no difference.
