In one of the streamings Sven talk a little about it. When a villager invites the group to The village he says he´s lucky and when passin through a river he also comments something about running water.
Vampires also suffer damage when pass through running water so It would be fun to see if you have to jump over the rivers.
My bet is that they will use that features for dialogues and roleplay but they will have something that would make the drawbacks of being a vampire spawn not too meddling with the gameplay, like they did with sunlight so Asterion could move unscathed in daylight.
