Note that everything i know about Vampire: The Masquerade and Warhammer, i learned from the game, or Wikipedia, respectively
.
It was to the flavor text of the Angels of Civilization to which i was referring the Warhammer Horus Heresy stuff, the way the Prime Angel has a close second, and then corrupts the rest of them - and end up being banished out of the normal plane of existence. The fluff text is pretty interesting as a story, the way you wrote it, because it's also a revealing point in the fictional origins that was unanticipated. The story of the Avvim and the creation of the Nephilim, not out of love or lust, but out of a desire to commit sin, is what's particularly interesting.
Yea, it was the theme of degeneration, but also of "diablerie", that reminded me of the Vampire series. The Son of the Fallen pretender is described as hunting down and devouring all his kin. The "mythology" of the Vampire games is that the 3rd generation of Vampires after Cain (the Antediluvians) will eventually awaken, hunt down, and devour all their degenerate offspring.
You all did a great job of realizing these Biblical figures, though. I imagine these will remain the most realized forms of these obscure Biblical giants for some time. Hinnom feels the most classically "evil" of all of the myriad nations created so far, and they're pretty cool to play. Thanks for making them!