Additional Development Notes (added after comment 3): The original premise behind the Balearians was that I needed them to fill an empty gaming niche in the campaign. In the earliest days, Zama was a human-only game world. There were no orcs, goblins or the like. So I created the Balaerians: a thoroughly evil and unpleasant human culture the PC's would have no qualms about killing on sight. Making them mercenaries meant I could place them anywhere in the game world. Making their home an archipelago meant that I didn't have to alter the world too much to fit them into it.