GypsyComet
SOC-14 1K
This feels campaign or table specific. World building in action.PC nobles are planetary nobles and not Imperial nobles. Then the planetary government applies too. If the world is Balkanized with multiple governments then even less authority. That is like the Prince of England, Prince of Japan, and the Prince of Thailand forming up to shake hands with the King of Spain. So a planet with a world spanning Monarchy has more important Nobles on planet. Off planet, the Noblity is just opens the door a crack, it is the capital and the commerce potential the noble directs that people really respect.
Knight is the lowest in the peerage and doesn't come with Land or Charter, the Baronet is the first conferred with Land and more typically a Charter. That is why the "Landed" Imperial noble is such a distinction, the Land generates an income to support the Knight (and staff), in addition to enabling the fulfillment of the Charter (or Letter of Patent) from the Crown.
Typically Knights are created by the Crown when put forward by a Baron or Count. They swear fealty to the Crown and to their Lord and are the commanders of the common militia man. The Baron (or higher) provides for the Knight and the Knight fights on their behalf.
A Baronet is created by the Crown through a Charter to raise and operate an industry to support the Crown. Think of them as the Factory Manager. A Baronet may be a city, and not a country estate running a foundry producing the armor and guns for the Crown.
A gentle reminder that a Knighthood, Baronetcy, or Baronial Charter like a Officers commission can be bought for a sum whenever the Crown coffers get low.
The career is intended to cover nobility (privileged leadership) regardless of scope or origin, though some editions add constraints due to the era in which they are set. It is certainly reasonable to limit your campaign's PCs to planetary status, and to interpret historical examples as relevant to particular worlds.
But it is also useful to remember that every other career path is Traveller is intended to be what the character *used to do*. There is no reason to assume the Noble career is different, and planetary nobility vs Imperial is similar in concept to being a retired County Sheriff vs retired FBI: a different scope for knowledge, contacts, and old enemies, but basically similar jobs when you had them.
Also, good or evil or something in between, the Imperium has thousands of worlds, many of which have little or no trace of Terran cultural influences, or even *human* influences. There is a strong chance each will handle their nobility (or "nobility") differently.