I've had the impression that Traveller was for mature role players, because you are given a character that you have had some or minimal input, which is great for one off adventures, not that great for campaigns where players may have wanted a more defined character arc.
It kind of depends on what you want ... and if you're willing to "reverse engineer" the character creation system in order to get it.
For example ...
The character that I'm playing in the
Boughene Station Blues PbP campaign on these forums was one where the "party" (mainly of NPCs aboard a ship) were already generated and there were crew positions open, so some very specific skills were needed for specific crew roles for new PCs to enter the campaign.
I chose the Navigator position (partly because it lets me kibitz ideas on where to take the ship next and use the sector map to argue my points) ... meaning I needed a character with Navigation-1 skill in order to qualify for the position.
Next, I needed to search through all of the CT careers that offered Navigation as a possible skill result. Imagine my surprise when I discovered that the LBB S4 Noble career had Navigation as an potential skill gain result. So I discussed the possibility with the Referee, got approval to make the attempt and started rolling dice.
I burned through a LOT of character rolls (on my own time) before producing a character who was a former Noble (career) who had Navigation skill and did NOT have a Yacht musting out benefit (since that would have been more trouble than it was worth in the context of the campaign).
Basically, I figured out what I "needed" in a character to slot into the campaign that was already underway and left "everything else" up to random chance ... and wound up with a 1 term Noble (who got position and promotion during that one term) who has four Skill-1 skills and a Travellers' membership (and some credits) as mustering out benefits. So my character is really young (and thus, really "green" in life experiences) who needs to "keep up" with the rest of the crew ... and I would like to think that so far I've been pulling my own weight in the campaign thus far, despite my character's lack of terms and a christmas tree of skills. Everyone else on the crew is ... older ... so my character is the "baby" of the group, and that's fine.
Sometimes you just need to play the CHARACTER, not the character SHEET ...
