To put it simple. Castlevania is not the most commercial name out there.
I was watching that new (pretty good) fan made live action web series these days and wondered why it didin't have many views while at the same time being a quality product. The same case applies to some games of the series too, good, even great ones, not played by enough people. It's not about the theme, I think, vampires/werewolves/zombies are VERY popular right now. It's not about the gameplay, because it's solid. It might be about marketing, sure, but then, it got me, the name... Castlevania.
Not only it sounds kind of dorky, it limits the appeal to Castle, and Vania, two cliches associated to old Dracula old movies done and redone many times, what in the name incites to novelty and experimentation? To mistery and fun?
And as many of you know Castlevania was called Demon Castle Dracula in japan, so it's not that of a sacred name to Konami.
Personally I'd try with a more global name, a la "Legacy of Kain" which in three words sounds open ended, intriguing and makes a case of a prominent figure within the series. Or A new sub series, an "Spiritual successor" not limited to Dracula and Castle exploring new mythologies while having the series recurring themes, taking place in the same world following the "Chaos" and "Dark Lords" plotline.
So, what if Konami decided to change the name of the series to make it more appealing? do you agree with the idea, or are you against? it? what suggestions do you have for it? Voice your opinion here!