I think that this is why the ethics question is ill-formed in video games: it is used as a mean to an end (i.e. what should I do in order to get this). Translated to real life, it results in a quite hypocritical and cynical behaviour (I'm nice in order to get that). Playing with morality implies playing with the players feelings (or rather the player plays with its own feelings), which in turn implies that the game have to build those feelings in the first place.

I can't help but thinking that there should be an AI for this.