Idea for the Pale Garden Biome

My idea for the pale garden would be some kind of haunted/old version of the mansion wich could generate in it and contain some items maybe even some new ones that match the theme of the biome and a/some new mobs or mob variants (like a breeze that looks and behaves like some kind of ghost).Mobs that would also be fitting are skeletons, the vex and maybe some kind of zombie. I think it would give the player more of a reason to even go into that biome and like that make it more interesting