This was one of the things roaming around my head while trying to get to sleep last night. Something like in Wildstar where you get your own instanced floating plot of land with your own house where you could decorate the yard and have visitors. There could be a quest chain in sea of clouds (or tie it to the local beast tribe) to earn a floating island of your own and then garner the ability to move the location it's floating at (aka just change the instance scenery). They could even take it a step further and let you purchase land use in a ward if a plot is available and your house would settle on that land, but instead of demolishing the house due to inactivity it would simply detach from the ward and take to the skies awaiting your return.