Thanks. Honored you'd take time out to register just for a comment.
I'm definitely taking it further, maybe quite a bit much further, if things go well. We'll have to see.
Wars are indeed a bit of an issue right now. I was planning on putting a Paradox-style war score (I'm a Crusader kings man, rather than an EU4 man, personall), which would handle wars a bit better, with an auto-time-out feature if the war drags on for too long. Current wars only end when someone takes the other's capital, which was quick to code but needs to be replaced soon-ish.
Dark power does need to be reigned in a bit. I'm planning on making the forces of light (the lords which have realised that the darkness is coming) a bit more agressive. They'd actually try to stop you, so you'd have to spend power to stop them. This said, I like the idea of you being weak at the start and slowly grow more powerful, giving you a sense of your reign of darkness being an unstoppable force of nature towards the end.
As an aside, dark towers and all that might be replaced soonish. Code I'm working on right now allows for non-human populations, and human populations to be slowly replaced with non-humans (fishmen, souless husks, insect-infested wretches...), so you won't need to replace the city with a dark tower, just transform it into a city of non-humans.