I'd say more people would be drawn to the game rather than turned away from it.
Just to sum the plot up in a sentence, "You're a barbarian (or whatever) and you go to a creepy old castle to kill DRACULA."
There are people that will go "Dracula? That's stupid," sure, but I'd imagine there are many more that would go "Dracula? Hell yeah!" Really you have to embrace what something is and accept it's limitations. Freddy Kruegar might be a bit silly as a character, but when you watch those movies, you're willing to put that aside and accept that he's this evil nasty boogeyman. If you don't, you're probably not going to watch them. Nobody goes to see Schwarzenegger expecting Shakespeare.
Having said that, who would you replace him with? Some guy named Walter? Mathias? Count Vladimire Bloodcreep the Thirteenth? As cool as they might be, they're not DRACULA. Whether you think he's a cute cartoon guy that runs a hotel or a bloodthirst warlord, you know that when they bring out Dracula for anything, they're bringing out THE Vampire.
It's like having your evil General be Hitler, the pirate you're up against be Blackbeard, or finding out the crimeboss you're tracking is Al Capone. They're the big names. You have to do a ton of work with an original character to get them even close to the impression thse guys can make just by introducing themselves.