My understanding is that parsecs are 3.26-3.27 light years of distance.
I would remove the note about Droyne being psionic. Until the PCs find out for themselves, that's a secret.
However, since psionic powers or strength are not hereditary, Zhodani society experiences more "churn" in the upper echelons of power with each generation. This continuous turnover via psionic meritocracy helps to inhibit the emergence of generational aristocracy and the hoarding of wealth and resources (it doesn't prevent it, but it does slow the accumulation that can lead to oligarchic dynasties).
There's a problem here.
There's a difference between people in the "career" of being a Noble (which means acquiring Position and Promotion, ala character generation) and people who have achieved high social standing by birth (from their parents) or as a reward for accomplishments and deeds (usually character generation related in a variety of careers that are not the Noble career).
In short there are "working" Nobles, who represent the Emperor to their world (and vice versa), who are "in post" as the noble of
{insert world name here}.
- Duke Regina
- Countess Efate
- Baron Kinorb
- Knight Boughene
... you get the idea.
In character generation terms, all such people are engaged in the "career" of being a Noble AND have successfully rolled Position in order to be posted as the noble for their "assigned" world. Only career nobles are granted fiefs of territory (from which they can draw rents and income to sustain themselves and their households).
EVERYONE ELSE does NOT get afforded such titles and grants.
People who are in the "career" track of being a Noble but have not successfully rolled for Position are essentially "staff, retainers and functionaries" rather than being the "head that wears the laurels" (so to speak), waiting for their opportunity to "move up in rank" (as it were) and are thus (more or less) "waiting in the wings" for an open seat in the game of musical chairs that is a matter of deciding who gets posted where in what Positions.
Everyone who is NOT on in the "career" track of being a Noble is effectively an "honorary" noble, rather than an explicitly political/working noble. Kind of like how people can become famous for all kinds of things, without necessarily needing to enmesh themselves in politics (or "noble society" with respect to sustaining imperial power and loyalty).
What you have written makes no distinction between these two types of outcomes for high social status.
It's kind of like the difference between being Prime Minister and ... Oprah.
Both have "high social standing" (for the purposes of illustration) ... but only one of them is involved in the governing of a polity (Noble career, in post), while the other is "merely" a celebrity.
All Noble career Traveller PCs are people who have "turned over their responsibilities" to a successor ... and mustered out of the career path. They can still garner significant respect (for their social standing, if nothing else), but they are no longer the "currently in post" noble of a particular world. Kind of like being a former president or former prime minister of a polity ... someone else has the job now, but you held the posting for a time.