I think I keep putting your suggestions on a shelf, because there are (in my opinion) more important things to do. But maybe I should finally start adding some more aggressive vampire skills/weapons.
Hope I will be able to start on this this weekend.
Can you give me a more detailed description of this sword?
a thought came to mind.
(yes i am a huge castlevania nerd if you can't tell)
in castlevania (and in japanese mythology) there is a blade called the "marumasa."
legends say it is a powerful, demonic sword. the thing is: it is also cursed. how cursed is it? well. it HAS to feed on blood too. if it goes a certain amount of time unsaited, it will start to feed on a persons life force. but, since you are a vampire, going without blood already damages you. so, perhaps the castlevania version may interest you. in castlevania sotn, it has a passive healing effect when you touch an enemies blood particles that spray out of certain enemies. it starts off pathetically weak, but there is an unseen side effect: every time you do this blood healing technique, it makes the sword stronger. little by little, it gains its own levels. until finally, it glows a bright crimson red. it doesn't stop then, either. it can potentially be leveled (through heavy grinding) to the point where its maxed out at 999 damage - the highest in the game.
wouldnt it be fitting to have a weapon for a vampire that also feeds on blood?
so. my theory is this: this sword, called the marumasa, would get stronger as you feed on blood while holding it. it would be impossible to turn others while holding this sword, but for every bit of blood drained while holding it, it gains its own, hidden exp stat. when it is maxed out, even the most skilled hunter will fear you!! and yes, it will look like a sinister black katana with a reddish outline.
however, if a non-vampire person wields it. it is still a powerful weapon. but if you don't keep it fed by killing non-undead mobs, it will start to damage you. you do not get the boosts vampires do, and you are cursed for however long you have it in your inventory.
and it's fine to put my suggestions on the shelf. i'm a patient guy and i don't like to force people to take my suggestions to heart. castlevania vampires are VERY op, but at the same time, so are the vampire hunters.