Translating Vampire... using existing IP into a multiplayer game is a reach but it COULD have been doable but you needed that to be a SMALL feature in a game with a much deeper presentation.
Vampire in my mind at least needs to be done as a series of games. Start with a good, linear, story driven game to introduce new players to your IP. Have it be sexy, and interesting, and with a interesting story. Build it with a nod to the White Wolf system. (as has been done 3!!! times rather successfully in the past.)
Take that and make a sequel that people WILL want. In the first game your near methuselah levels of power. (Meaning you were around before the Floods AKA Noah's Ark.) So REALLY freaking ancient and powerful for a vampire.
In the second game you start as a Caneite (newish) vampire, I would start them in the middle ages. Let them establish and play the character then enter a deep sleep (called a torpor can be willing or being staked.).
In the 3rd game you bring them into a more modern era. Either current or something like the 90's when the whole goth movement and social identifier was huge. Introduce your character from the middle ages to waking up in a strange land speaking a strange form of English and learn the land. Maybe become a power player in the city/region you operate in, eventually leaving or founding a base of power.
NOW you introduce multiplayer elements and 'blood hunts' and all of the associated interesting multiplayer gameplay that can go with it. Maybe branch into a Neverwinter nights sort of framework and let the IP sink or swim on it's own.
The problem is you have to start and create your backbone and grow it from there. You can't just go...
"VAMPIRES KILLING EACHOTHER BECAUSE REASONS" and expect everyone to just jump into it.
