Just had the idea. A bit random but... just a quick little interest check.
Vampires.
Alright so an idea needs more of an idea. Basically...
A Kingdom of Vampires, with a very strict class system. The lower class suffer from dwindling blood supplies, while the upper class life in excess. Because of this, a rebellion has formed. All the while, threats from outside, both mortal and not.
Very 'Revendreth' inspired.
Some tidbits of lore I have running through my head is:
Humans are flocking to the church for protection against the 'unholy', and the church is growing more and more powerful by the day. And yes, things like Paladins/Crusaders are very effective against the things they consider unholy.
Vampires are ruled over by the Archduke, and his five children, all of which are Dukes/Duchesses. However, his youngest daughter has aligned herself with the rebellion, something he is apparently not yet aware of.
The power of a Vampire is classed in 10 levels of power. Most are on a scale from 1-5, while more powerful ones go above this, and are typically granted political power as well. A point of resentment in the Archduke is that he only a class 7. Great Vampires of the past were class 9 and rarely 10. This leads people to believe that the power of the Vampires is dwindling, and they are growing weaker over time.
Just ideas for now.