The threads by Odelya
here and
here made me think a thing about known ranks of Holders might be useful
For the Khanid Kingdom, there are several Dukes mentioned:
Maser Bisi, Duke of Ashmarir - this duke is mentioned in the
mission chain from Arizam Gimit. Ashmarir is a single system.
Shimon Jaen, Duke - this guy is a
Commander in the Khanid Navy
In the Amarr Empire, we have:
Duke Manel Kador, Governor of Araz Constellation.
Baron Bartezo Maphante, Baron of Garisas system.
The Duke of Pator, a destitute Holder
Numerous Lords and sometimes Ladies, who occasionally own multiple planets, e.g. Lords Miyan and Darabi, or may only have a deep space habitat, e.g. Lady Jariza.
The age of a star system affects the Holders that control it. Some Holders own small parts of land, others own continents, some own whole planets. Less developed regions, the Holder controls multiple star systems.
Thoughts on this:
My thought would be, that a star system would have multiple levels of ownership.
E.g. for a system in Kador, there would be:
Uriam Kador, Heir and Holder of Kador Region
a Governor of the Constellation (may have the title of Duke)
a Holder of the System (may have rank of Baron)
a Holder of each Planet (Lord/Lady)
Holders of significant other celestial features - large asteroids, comets, deadspace pockets (Lord/Lady)
Holders of parts of planets (Lord/Lady)
In lesser developed systems, the Governor of the constellation would have control over everything, with vassal Holders only being created if the need existed.
In more developed systems, there would be lots and lots of Holders, with varying sizes of Holding.
A Lord might own several Planets, but not the System or the asteroid belts, comets and other celestial features. Might even own several planets spread across different star systems, which would complicate things for the lieges of those systems - Holder Plots, everywhere.
So, for players, then being a Duke/Duchess places the character pretty high up the ranking, suggesting control of a complete System or even Constellation.
Being a Baron/Baroness is still pretty significant.
Owning a Planet is also quite high social ranking.
Once you get down to planetary scales, then things are a bit easier to cope with player titles, I think.
Continent > Country > County > City > Town > Village > Farm. That sort of thing.
I play Crusader Kings 2 a lot D: