Louis XXIV
Le Roi Soleil
These suggestions come from someone who has obviously not played the game, so take them for what they're worth. Basically, it comes down to Harmony affinity and treatment of native life. First I should say I have no problem with playing harmony where one attacks the native life. That's fine when the strategy presents it. But it strikes me as good for a strategy game (in addition to feeling true to the affinity) to provide alternative routes. And benefits for a peaceful game would be a good idea.
The problem right now is all the incentives for Harmony are to attack the aliens. The resource they absolutely need is located on alien nests. In order to get xenomass, you have to destroy their homes. While you can find sources of Xenomass without this, no other strategic resource has this problem at all. So, in a war for scarce resources, the incentive is to wipe out alien life. In addition, their bonus of lowering alien aggression quicker really just means you can attack them without consequence more often. That strikes me as exactly backwards. I'm assuming you reach friendly (blue) status quicker, but I don't know that for a fact (that's a nice start, but there are a couple problems there). Here are my (hopefully modest) suggestions.
Have alien nests count as a xenomass well if they're located in your territory - probably as a harmony bonus, but maybe just as default. Probably only do this if the aliens are friendly. But, that way, you don't have to destroy the nest in order to get xenomass.
Give a warning if you're about to attack friendly aliens. Don't make them angry because you carelessly move your explorer into an alien hidden in the fog.
Let harmony players ignore friendly alien zone of control. That way they don't annoy you in your territory.
Doing this and you won't be penalized for being friendly to aliens while a harmony player. It'll allow you to try and pull off the strategic benefits without being hurt too badly by the problems.
The problem right now is all the incentives for Harmony are to attack the aliens. The resource they absolutely need is located on alien nests. In order to get xenomass, you have to destroy their homes. While you can find sources of Xenomass without this, no other strategic resource has this problem at all. So, in a war for scarce resources, the incentive is to wipe out alien life. In addition, their bonus of lowering alien aggression quicker really just means you can attack them without consequence more often. That strikes me as exactly backwards. I'm assuming you reach friendly (blue) status quicker, but I don't know that for a fact (that's a nice start, but there are a couple problems there). Here are my (hopefully modest) suggestions.
Have alien nests count as a xenomass well if they're located in your territory - probably as a harmony bonus, but maybe just as default. Probably only do this if the aliens are friendly. But, that way, you don't have to destroy the nest in order to get xenomass.
Give a warning if you're about to attack friendly aliens. Don't make them angry because you carelessly move your explorer into an alien hidden in the fog.
Let harmony players ignore friendly alien zone of control. That way they don't annoy you in your territory.
Doing this and you won't be penalized for being friendly to aliens while a harmony player. It'll allow you to try and pull off the strategic benefits without being hurt too badly by the problems.