A most excellent response. I think the setting issue is something that has evolved as the game has evolved (broken record mode on); because Traveller was more generic in the late 70s up through the mid 80s, but there were lots of tidbits (and huge chunks) of the official setting given to players to manipulate and use as they saw fit.
The huge gaps in the setting wasn't given to the players (with the exception of the Foreven Sector). It was an inescapable result of the impossibility of covering a setting the size of Charted Space (or just the Imperium for that matter) with any feasible amount of published setting material. Instead, new material was added in bits as time went by. And as Robert Prior so wisely said once,
"The very act of writing a Traveller book closes the doors on possibilities. Any game supplement does that, assuming the publisher cares about internal consistency."
To complain that later material reduced the options available to players is to complain that water is wet.
Besides,
GT: Nobles (to take a prominent example) didn't actually reduce the options for any referee; they were and are free to ignore anything they don't like. It just reduced the options for later writers of Third Imperium setting material.
I still think that's true, but the official setting has, for some, crept into actually becoming the game.
The official setting is a setting. No more, no less. You can play in the Third Imperium setting using other rules than Traveller
1 and you can use Traveller rules for other settings. To believe that you can only play Traveller in the Third Imperium setting would be a fallacy that should be refuted, not catered to.
1 That's not to say that all non-Traveller rules are suitable, just that some are.
Aramis; granted, but there's still lots of gray all over the map.
Of course. Descriptions of the setting has only had 35 years to cover the map and a lot of that has been repeats. That's nowhere near enough wordage to describe it adequately.
Norris has "house cav". How many other nobles have forces that the Emperor can call upon?
It seems likely that at least the other high dukes would also have housecarles, but there is no evidence of that anywhere prior to
Nobles. At the very least the Duke of Rhylanor's housecarles ought to have been in FFW, but there's nary a sign of them.
Nobles established that all high nobles receive permission to raise a unit of housecarles. How big a unit is subject to the Emperor's whim, but
Nobles lists the usual sizes.
Is there a medieval feudal setup where nobles send either forces or money to help in some conflict, that is in addition to the standing forces (navy, marines, army...scouts), or are they simply part of an honorific class?
No. The dukes function as a sort of hereditary royal governors. As such, the units they command are at the disposal of the Emperor, no matter how they are raised. Paids for out of duchy coffers or out the duke's privvy purse, it's all the same.
Yeah, there's bits and pieces dropped here and there, and I guess GT Nobles outlines the definitive GURPS version of nobles...
Actually,
Nobles outlines the definitive Third Imperium version of nobles. The problem, as I understand it, is that Marc Miller is unsatisfied with that version and intends to retcon it. As is his right. But until he does, we're left with the current version.
...but my gut tells me they act as nobles, and not just holdovers from when Europe transitioned from a purely feudal system, to something more bureaucratic.
They're certainly not holdovers of anything. They have a well-defined and deliberately crafted function in Imperial government and society. The high nobles have specific duties and the other nobles constitute a 'labor pool' from which Imperial officials are mainly recruited.
Hans