Watching this thread while working on my current setting, I tried to find my
personal answer to the thread's question "What is Traveller ?":
What is Traveller
for me, what makes it unique
for me ?
I wrote a list of Traveller elements and compared them to elements of other
roleplaying games I liked, and eliminated all that those other games have, too.
In the end only a single entry on the list remained: Characters.
Traveller's semi-random character generation with terms of service and an in-
teresting choice of careers and the fact that the characters' development ta-
kes place inside the setting instead of the game mechanics is what I see as
the - for me - really important part of Traveller.
Traveller characters support setting involvement and roleplaying because the
system concentrates on in-setting rewards for the activities of the charac-
ters, not on mechanical rewards like experience points or thelike.
Since I doubtless have a strong simulationist streak, this makes Traveller feel
quite "realistic" to me.
All the other elements of Traveller are important, too, as long as they do not
force a specific setting upon me, but they are not really unique enough to de-
fine Traveller for me.
So,
my Traveller is about characters.