Okay, this is weird for me. According to the launcher, the succubi should be allied with orcs and gobs right? Because in your games they act as item thieves and are sided with necros and were beasts. The race is not designed to be item thieves. They can be for challenge but by default they are better off being babysnatchers only.
Also if you are allied with werebeast, they will always attack. They are crazed. And the home civ should never attack in any circumstances. Those are the limitations of making entities of crazy monsters. I can use your saves to figure more clearly what is going on there.
Likewise, if you get a necromancer (or something similar) who creates stuff that is opposed to life, it will be hostile. You can try capturing and corrupting the necro for fun but the creatures it rises will attack your citizens, that's a vanilla mechanic that can be weaponized with creature stockpiles and windows management.
Any of this helpful?
Very. The topmost statues are nice, the angel ones underneath are better off given to humans. While the torch has a perspective issue, the holes could be cracks in the ground.
I've being thinking about adding ornate furniture too: Mirrors, luxurious sofas, etc. contrasting with the blood and brimstone. If we could pick a style I'd go for art nouveau, but I doubt that there is any material in rpg format.