If you don't know where you're going any road will take you ther
Location
Here
Interests
Brandon Sanderson, Wikipedia, geography, comparative linguistics, writing, reading, drawing, sleeping, Hitchhiker’s Guide to the Galaxy, cartography, Shakespeare, learning languages, the International Phonetic Alphabet, Early Modern English grammar, Wings of Fire, conlanging, and some other stuff. In other words, I’m a huge nerd.
I feel like they would have lots of different sects with different opinions on whether or not murder/feeding off of people is okay and then they would base their governments off of that but I have no idea the specifics of your world so maybe that doesn't work.