"In my humble opinion one should not get points for the act of killing in itself as the fight gives experience automatically to the skill being used, but there was an obstacle removed by removing the enemy and the enemy was removed to reach a goal and not for the crave for gore but for a higher goal that contains the *Game Points*." DAD
just what i would like too see in RPGs. maybe a bit like more like dungeon siege where more usage of certain skill areas will make your character better in them. unfortunately all skills in dungeon siege are means to kill & not anything else. so i hope skills/abilities in future larian games, maybe DD2 can have plethora range of skills other than ones use for killing. there's barter, diplomacy, persuasion, stealing, lockpicking, perform(bard-like), etc... .
RRR is a good start for larian to improve on their previous endeavour, DD. now there's at least a skill in crafting better arrows from ordinary ones. this is a non-lethal skill though its implication will lead the player there.