The AAAARRRRGH malus is one of my own personal demons, as well. It does seem a bit harsh, but then it serves as a way to represent oppression of one's people. The permanency of it is not in line with other such mali, however. I think the existing "We will never forget your cruel oppression!" mechanics would suffice just fine here, unless this is leading up to another chain of as-yet-not-implemented events. Either way, it does deserve strong examination. I'm sure they are seeing all these comments and doing just that. From the results of the past year or so, they seem to design at least somewhat in such a manner.