You sir, are a genius.
Complete and utter agreement.
lol while i would like to take credit, alot of what i posted is already from other lore. mostly Anne Rice and older myths.
I would also like to maybe see a wolf form where you turn into a wolf (being able to pick a colour would be cool; black, brown, or white) this would give you better sneak ability in the wilderness, you would join the wolf faction so you could run with them and call them for back up if there are any within range, you would attack as a wolf but a little bit stronger than a normal one. also maybe a bat form where you can travel at a good pace through the air, maybe at mount speed or a little faster. also possibly a mist form where you turn into mist which would give you 90% chameleon. preforming a sneak attack on some one while in this form you would see your char materialize and take the target out.
i know none of the more advanced things i suggest will make it like like the wolf, bat, mist forms, fledglings, thralls, ghouls, and the growth process will make it to the game because of implementation and they don't fit the lore of the Skyrim ice vampires (for got there name).
Ahh, ghouls - a fellow hellsing fan I see. Great suggestions, bravo sir.
lol actually i have known about vampiric ghouls years before i saw Hellsing. but yes great anime.