Welcome to my home~~
How easy/hard was it?
It was fun, but hard at parts. There are many ways I could improve the process if I were to do it again. For instance, I learned not to put a roof or walls over the floorplan before finalizing the details inside. Once I had the walls and roofs up, I had to tear them down multiple times to manipulate anything inside.
What compromises did you have to make?
As much as I loved the expand-out-tool, it left behind it a bunch of hollows, which was not the easiest to fix.
Humanistic use cases?
You can model the tomb of an Egyptian mummy, and let the archaeologists explore the space freely through VR, without having to take care of the logistics of making the travel, wearing the heavy gears, and being careful not to destroy the real artifacts. This could be an exhibition.
Put those walls up AFTER you finish the inside of the building! You do not want to get lost in a wall of whites when you will, inevitably, screw up your trackpad maneuver.