Main house inside other buildings?

For a while I've been trying to figure out ways to fit one of the mansions inside one of the non-enterable buildings/a collection of them so it looks like that non-enterable building is my house. The closest thing I could think of was maybe putting the inazuma mansion inside one of the larger buildings we got from sumeru or fontaine? I don't know, the interior layout being directly tied to the mansion really annoys me and I wanna be able to change things around with it fitting the exterior. Any ideas on ways to pull such things off?