I just wrote a blog post about the world/setting for Blood Dark Thirst - it's still in the beta stage. I anticipate releasing the finished version in September.
Obviously, it's got to be different enough from what came before to make it worthwhile for me to create and gamers to play. I'm starting to differentiate it with various choices - most people are aware that vampires exist and most vampires are evil - consider the human condition, but if acting like a demon was incentivized. Feel free to read the whole thing here...
https://vengersatanis.blogspot.com/2017/07/setting-ideas-for-blood-dark-thirst.html
Thanks,
VS