Something reminded me of this idea I had a while back. I never posted it because I forgot, but now that I remember; here goes:

Picture having a house the size of Belle Isle. A single level, no interiors or other exteriors. The entire house is that entire open field or whatever it may be. Different biomes or extended biomes for different purposes: Group farming, iceskating, ocean, even a guild spar layout due to the massive size of the level. These levels would most likely be made completely desolate. The reason for this is for the player to use this vast area for creative purposes or to give a place to stowaway unwanted furniture to clear up inventory space. With spatial grassy levels one could design their own gardens, their own private islands using furniture to literally create the entire plane. With something like Lighte's Island (laggy island) the oceanic setting would be perfect for ship builders to make even larger scale furniture boats. A guild spar house would also be a great place to practice for GST or for fun without worrying about losing points r having to create another guild entirely. So, wrapping things up, the entire idea is to have a large single leveled house for decoration or storage purposes. I could go on but its late and I'm tired lol.