It's very good to hear that there will be some disposition setting. I know that it can't be good for my karma, but I have to whine a bit...Instead of preset personalities, enemies should have personality values that you can set from 1 to ten, and checkboxes like 0 Will run at --- hp. It'd add for more variety and just be nice in general. Surprise people a bit more, and make it easier to create tough situations that test the player's skill instead of the character's.
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"Well you know that it's a fool who playes it cool by making his world a little colder."