Similarly, it would also be fun to be able to buy from large traveling trade guild ships. It could also be a good thing for future quest systems.
This is what i was thinking when i read the title.
It would be neat in general to have a trading block that you had to interact with directly, that drew from storage containers. This would make more interesting player shops and make things like malls, bazaars, and other trade center formats possible. You could dock up with a large slow roaming trade guild ship, check out thier wares, and be on your way.
Trading also needs a lot more unique non block items with various uses. I am remembering some stuff from a role playing game from when i was a kid that would be pretty cool. Consumables only usable by ships, and consumables only usable by astronauts, decorations, etc. Some would be far more rare that others. Man i need to create a different thread for these ideas.