I don't mind vampires, though I have no intention of playing as one. My interest in Dawnguard is mainly that it's more content, not just because it has vampires in it.
Yeah, I feel the same. I do like, though, that it feels a bit different from the main game (going by the footage we've seen and Todd Howard's comments). Ideally, each major DLC will its own unique feel, but still feel like an extension of the main game.