How about selling extra console slots or weapon slots in the c-store?
Eh, unlikely to happen unless it somehow becomes tied into the mentioned ship building/crafting system at Starbases mentioned for next season in the Engineering reports (which will be next year sometime if I recall correctly).
Yeeeeeah... like the bridge officer and captain species with unique powers, the console sold with the Oberth that boosts any ship... No advantage-selling at all
Minor advantages are acceptable, but having 15 weapons and 8 of each console is not a minor advantage. Besides we can always find a free substitution for Bridge Officers and consoles. There is no advantage of playing a Ferengi or Caitian over a Vulcan or Human.