[Alneyan]

You could remove that last 1M from the original settlers, but I'm pretty sure happiness is *per planet*, and that's it: races only have an impact through their own specific modifiers (the last few lines in happiness.txt).

As I understand it, Emotionless simply means "no happiness checks throughout the Empire", so happiness stays the same everywhere, and cannot change for rioting planets. It might also be a very high "Go back to indifferent" routine, if Angry/Jubilant captured planets go down to the Indifferent level (rioting can never go away through natural decrease).