The nature of procedural contant generation, especially as it applies to manmade stuff, means that visual variety in this game is not as wide as it could be, not by a long chalk. I'm disappointed with that whole side of the game, to be honest.
The ship variety is laughable. It appears to be very labour-intensive to create a new ship currently, given the slow pace of new ship releases. If Braben really lived up to his own PG hype, we could have an infinite variety of ship types on demand, with slightly different ships for each of the countless minor factions, let alone the Big 3. That would give at least one part of the game the kind of visual spice that it needs.
Stations and outposts are PG, but they are all made of the same bits of kit, so they end up looking the same each time. Even the same station/outpost modules could have some procedural variety - sizes, colours, detailing etc. Instead it's all prefab architecture. Inside the stations, there are 2 looks. Did all the architects and interior designers in the galaxy go to the same school of design? Are there only 5 colours of paint available (cream, gunmetal grey, red, blue, white)?