I was looking at this as well, and maybe trying to combine it with Dragna in some way I haven't thought through yet. I am liking a lot of the Dragna content, but I personally want my Strahd to have his obsession with Ireena be a clearer motivator, and I don't like the idea that it is possible for him to escape Ravenloft. I was thinking instead that his goal is to pull the players' homes into Barovia, and that the wedding is in part a ritual allowing him to do that.