Just killing vamps for money? That seems a bit mundane. From what I got from the synopsis I assumed you had at least a general plot in mind that had more mystery to it. I'm fine with meeting each other along the way but if we're just bounty hunting that's not much of a story. The synopsis also says people have only been disappearing which suggests that no one knows what's really going on. 

Our main bad guys are vampires in this one so why are they kidnapping people instead of just feeding from them like usual? I think that should be an important plot element. Morthal is also a fairly small town so people would notice if others started disappearing but Falion the court wizard would be the prime suspect since he's generally under suspicion by the townsfolk. It seems like a waste of a good title for us to just start beating up vampires with no real substance to the story.