January 20, 2016 5:05 PM EST
I think the Dawnguard are largely forgettable because you are just a soldier in their ranks, not the leader or anything. That combined with the fact that 90% of the DLC has you working with Serana no matter what. You do all these great things and it's like "That's cool and all, but Isran is the head hancho."
Being in the Dawnguard is a lot like being in either side of the Civil War. You lead almost every battle, but your just a soldier.