Stereotypical vampires?

An interesting idea I saw proposed on a fan campaign blog was introducing stereotypical vampires to Nephilim. Now, the blog itself operated on false assumption that Selenim drank blood and so on, ignorant of the original French rules. But that doesn't prevent the ideas from coexisting.

The Selenim themselves are psychic emotional vampires: they feed on emotions in proximity. They aren't harmed by sunlight or anything special, but a simple bullet is sufficient to kill one. They don't age, so they unlike the reincarnating Nephilim they can live across the periods of history in continuous physical presence. According to Codex des Selenim, they can even have children in the usual fashion and some of these children are fated to incarnate as natural Selenim one day (for reference, natural Selenim incarnate when a mortal encounters a proto-Selenim in the lower planes while having a nightmare or near-death experience, rather than being former Nephilim).

Through a Spell, Necromancers are able to contaminate mortals with Black Moon-Ka and create what's called the mort-vivant or "living dead" or "undead." These people are still alive, but they now feel a connection to the Black Moon that poisons their mind. Necromancers may use further Spells to give them supernatural abilities, such as quasi-Metamorphosis Traits or siphoning Solar-Ka on behalf of their master. A variation of this is used to create the Restless, dead souls similarly contaminated and thereby granted the ability to reanimate their own corpse.

So where do vampires fit in? Vampires were created by the Selenim Arukashu through twisted experiments, though what he was trying to accomplish remains mysterious. Was he trying to create more powerful undead? Trying to create Selenim artificially?

They're a variation of the living dead, but with the ability to drain Solar-Ka by drinking blood (as the blood contains the Ka in the US version) and thus sustain themselves in the absence of a Selenim master. They no longer age, so they can potentially live for millennia. Furthermore, they can replicate the Spell that created them and turn other humans into new vampires. However, each new generation is weaker than the last until they're unable to recast the Spell.

In terms of 3e-style rules, when a vampire turns a mortal then the new vampire has Initiated (BMK) at 1 level lower than its creator. E.g. a vampire with BMK at the Enough Initiated (3) level would create vampires with BMK at the Little Initiated (2) level. If the new vampire would have BMK below Not Initiated (1), then the Spell simply fails. Casting the Spell costs a temporary bullet from the creators BMK Characteristic. Vampires cannot increase their BMK level after creation. This means that there are only five generations of vampires: Very Initiated (5), Initiated (4), Enough Initiated (3), Little Initiated (2), and Not Initiated (1).

The Spell to create vampires is inscribed on all vampires as part of casting it, and comes with some other benefits. Vampires can enter a biological stasis in the absence of sustenance, preventing their BMK from suffering Entropy, and awake when a source of Solar-Ka comes within proximity. They possess retractable fangs and claws that they use to draw blood for consumption, or defend themselves if they lack other weapons.

Alternately, Arukasha discovered a Spell to summon proto-Selenim from the lower planes and incarnate them within chosen Simulacra. 

To take a page from C.J. Carella's WitchCraft, maybe bloodthirst is treated as a psychological flaw? Under 3e style rules, "Bloodthirst" is a new Alteration Fall (flaw) reserved for Selenim. Selenim with Bloodthirst must Assuage themselves on the terror and pain of mortals by physically cutting victims and drinking their blood. Anamorphs with this Fall construct the appropriate claws and fangs as Aspects of the Head and Extremities.

I have to think more on it...