That's interesting to read. And a child returning to claim the estate is a perfect way to build the family story. Btw, servants can indeed be used as placeholders. My ryals occupy 8 big esates, but they mostly resides in the palace. Some of the others were let to renters (finer families, mind you) and the rest has sme royal (or military) employee residing as Caretaker, in a separate section were they can even build a family. There are currently 4 royal children aged about 18-23, so it will be interesting deciding what estates they will move into, and maybe some servants will jopin them from the palace, too.
Because of my recent revamp, my higher aristocrat Houses will now be more eager to send their fresh YAs to serve for a few years, especially those not going to University. It might be a short term job, but will prepare them for running their own household in the future.