Heavy Industry — With interstellar transport so limited in the bulk it can move, worlds have to be largely self-sufficient in industry. Some worlds are more sufficient than others, however, and this planet has a thriving manufacturing sector capable of producing large amounts of goods appropriate to its tech level. The locals may enjoy a correspondingly higher lifestyle, or the products might be devoted towards vast projects for the aggrandizement of the rulers.
Major Spaceyard — Most worlds of tech level 4 or greater have the necessary tech and orbital facilities to build spike drives and starships. This world is blessed with a major spaceyard facility, either inherited from before the Silence or painstakingly constructed in more recent decades. It can build even capital-class hulls, and do so more quickly and cheaply than its neighbors.