ehhh ... no
there is an abysmal difference between the succubi (of zion) with us.
We think about the consequences of what we do to the point of creating policies and movements to avoid further damage to the world.
Zion's demons are ... just that, evil demons. They do not have depth or a great background, they are just that, demons that are evil because they can be evil.
Another thing is that you forget about human women because sucubes can only drain men, that's where you should think what they would do with them
Succubi as well. They have a lot of depth to them.
-Succubi sided with the angels against the void clan, that wanted to suck the entire universe dry. This would doomed their entire race.
-Succubi don't kill everyone in that world, they turn most of the population into slaves and cattle for them to feed when they are not invading another world. This world starts to be called "a tower". In this case I'll explore more of it in the full chapter 3 with the Tower of Ashes.
-Succubi are originally spirits with darker tendencies. They are not simply evil. They were in tune with the darker forces of Hell and took form in there. Although many spirits reject this by either taking form in heaven or staying as a spirit. But the energy there, the politics and backstabbing eventually corrupts them all, or worsen their evil tendencies. (Plus, I like my succubi evil lol)
-One of your brothers, Aniketos, talked about the same point falcolo did. Succubi are just in for resources. Just like humans when they killed a boar or a bull to eat. The main difference is, humans are a self-conscious race.
-One entire clan rejects the idea of sucking life, like the Lunar clan, that stay away from hellish politics.
-Many neutral or good spirits were brought in due to The Great Pull by the Elemental Clan to raise their numbers, condemning them t become demons. One example is the cow succubus, a originally good spirit.
There are more points but I ranted enough lol