Two commodities which I'd love to see in Disco would be...
...Hull Parts...
Expensive to buy, requiring something like 500 units of free space in your cargo hold, and very lucrative to sell. The only ships able to carry them (in-RP at least) should be ships with a big, open cargo bay like the Heavy Tanker.
... and Marines.
Not for trading, but for RP. Sure, you can use the more generic spaceship crew commodity together with some units of light arms as well, but it would be really cool for each faction to have their marine units (Libertonian Mobile Infantry, Rheinland Marineinfanteristen, Bretonian Orbital Shock Troopers, Outcast Marines, Pirate Marauders, Kusarian...I'm sure you can come up with something here).
