I like how it's presented in "I, Vampire" by Micheal Romkey, in that book it's not so supernatural. In there it's a virus that alters you DNA and lets you use more of your brain cause you know humans only use 10% of theirs. They also don't live forever just a really long time and they age very very very slowly. It's cool it has historicle people asvampires because htey are trying to preserve the arts. Like Mozart, Rastputin, and others.then thees evil historical popele like Jack the ripper, Von baden, Hitler, and again others. it's a great vampire series you should read it.
Anywho if the myths are at all true i'd thing it would be more something like that rather than them being like a demon or something. But yes the over use of the vampire in Rping is a little old.