[Baron Munchausen]

Even better, let's change "demeanor" from a fixed setting to a sliding scale like "anger level". When you do "friendly" things like enter into treaties or give gifts your demeanor moves up the scale, and when you do evil things your demeanor slides down the scale. Then the AIs can react directly to your demeanor as it is your "reputation"! Different acts would have different degrees of effect, of course. When you glass a planet that ought to require several gifts or treaties to bring demeanor back up to "neutral" again.