You ever hear of the Dumarest of Terra Saga?
Apparently that's where a lot of the high passage/
low passage stuff. The guy wrote 33 books for
the saga & it's about the guy, Dumarest, going
from one planet deep in the Milky Way galaxy
& traveling back to Earth. Each book is basically
Dumarest on a given planet or set of planets
traveling through.
That seems to be where the storyline seems to
depart from Traveller. I've finished re-reading Book 0,
1, & 1/3rd the way through 2. With Traveller
you don't necessarily spend so much detail on
one planet at a time (according to advice from
Book 0). However, it could be a different way
of playing it, if one covers the movement from
one planet to the next. Such a game would be
a lot slower to play, but it also gives more of that
effect of STL communication from one planet to
another. Some worlds may not get a lot of updates
from more advanced worlds since the trade would
be slower (not enough product to ship, can't build it
from the planet it's sent to (copyrights, resources,
etc), too heavy/large & so on).
These Dumarest books could be pretty cool. The
first one, even used is pretty dam expensive though!
$10! I would think a book like that should be < $1,
if it came from the late 60s.