Something that could be cool and give some life to the game outside of being only populated by players would be if your retainer(s) would casually walk by as a random events while in their respective cities.
If they are not in the wards, the could wave and say "Hi" to you before continuing their way or, if they were supposed to be attending your goods in the wards, they could start to panic and flee; afraid that you would catch them skipping work.
Wishful thinking: yes
Being implemented : not before the game is ready for it.
As long as Guu is having fun, everything is Ok.
FFXI : Goudaba @Valefor
FFXIV : Goudaba Wynarv @Kashuan