Tomb Coast and Vampire Kings

Any ideas of potential other legendary Lords that could be added to the Tomb Kings and Vampire Coast? I remember reading somewhere that there's an undead skaven pirate who's capital ship is actually a reanimated whale. Clan Scurvey I think it was? I could be wrong. But that would be a cool lord to add to the Vampirates, maybe gets access to some skaven units the way Arkhan gets access to some Vampire Count units.

I question this because, with Norsca ***finally*** getting a new lord and other things. That leaves the Tomb Kings, Vampire Coast, and Chaos Dwarfs as the only DLC factions that haven't received any new Lords and subsequently new units as far as I can tell.