I could see a smaller DLC continuing the story of Henry after the tumults in 1403 when he is an accepted ministerialis - not a knight which is connected with noble birth, but integrated fully as an armed man (yes, with shinies and all that) in the household of a local lord, maybe earl, duke or even Wenceslaus. He wouldn’t have a mansion (again - ahistorical), but the story could focus on a castle with its surroundings, that means, the DLC itself could be the representation of a really big and very detailed castle with surrounding landscape.