The Invader is a class of multi-role multi-environment general use armored vehicle deployed by the Anunnaki.
The Trace On System, abbreviated as either TOS or TRON are a series of epidermal implants and nano-fiber filaments implanted to improve the reflexes, balance, and agility of the augment wearing them.
Pirates' many bejeweled rings and piercings actually had a practical purpose - when the pirate or sailor died, the rings could be taken off as payment for a proper burial, saving him from a watery grave. This could be tied into regional culture, or made into a quest (The Pirate's Lost Rings, etc.). Also gives treasure-seeking divers another thing to look for besides crusty old chests.