Actually my name is Marc.
In terms of story, I see Haunted Castle as extremely weak, since it wasn't about stopping a crazed count from destroying humanity, but rather merely saving a bride from the forces of evil, when it's clearly not worth the trouble. If Simon's wife was developed more, and gave us a reason to care about her, maybe my opinion would change, but she gets no characterization, and thus doesn't drive us to really want to win her back.
Other versions of castlevania 1 tell their stories much better, especially Castlevania IV, which, as one review said, "tells the story through it's aesthetics".