It's not "dead," it was just conceived as a 10-part limited series all along. I wouldn't want to see it picked up if the story's already ended. We saw how badly that can go wrong with Heroes. The original plan there was for each season to feature a (mostly?) new cast and new storyline, so the first-season story and character arcs were satisfactorily resolved in that finale. But because the actors were popular, NBC insisted that they be kept around, and the remaining three seasons floundered because they were dragging out character arcs that had already reached their natural resolution, and so it was all kind of pointless.
Dracula was never just a 10-part miniseries, especially when you have a final episode with very little resolution that opens a lot more doors.