A great game. Very, very, well written. However, the psionics is very, seriously horrible. It allows "magic" into a sci-fi game. What even worse is that it provides god-like powers: healing within a 10 meters (30' feet) of the target, transforming targets into any other humanoid form within 50% of their own mass, if the psychic dies it doesn't actually die...largest bit of skin can slowly grow and the pc will recover. I only allow psychic powers below Level-2. Other than that, its really great a game.
Another thought...at least the Traveller rpg provides the possibility of having a starship (which SWN doesn't).