I'd also wondered as much as well about whether what if Grant was the sleeping sodier, rather than Alucard. It could make a lot of sense in some ways, as having Al be the soldier just feels... off. He's a warrior, a vampire knight, soldier almost sounds too... lowly for him, and the timing for the sleeping soldier myth, if it's been old wisdom to the people of Gresit for a while, just doesn't quite work, even with the prophecy from the future given to the Speakers, unless they've been around for a long time. It's almost self fulfilling prophecy otherwise in a way.
I'd also spotted the priest that looks like Zead. I'd wondered for a short time whether the Archbishop was Death, considering how long and clawlike his nails were, so like Dracula's. There was something grotesque about him, the way his eyes were small and beady.