To add to some of what I've posted not far upthread: is the basic dynamic of play players engage with GM's ideas or GM engages with players' ideas? As I've said, when I'm GMing Classic Traveller I'm inclining towards the second, though it is mediated through the procedures for random generation of content.
Of course there is back-and-forth. But the answer to the question why does our Traveller game involve alien civilisations, psionics and plots within the Imperial Navy and Marines is because the PCs included a xeno-archaeologist, a spy, and a former Marine who aspired to learn psionics.
Of course there is back-and-forth. But the answer to the question why does our Traveller game involve alien civilisations, psionics and plots within the Imperial Navy and Marines is because the PCs included a xeno-archaeologist, a spy, and a former Marine who aspired to learn psionics.