Home Regions includes a fix to the way townies are generated when they aren’t required to live in a specific World. 

Normally, the game puts population quotas on certain Worlds to make sure that there are enough Sims from specific cultures available to show up in those Worlds (for example, Sims with Island culture for Sulani). Unfortunately, these quotas are set quite high (30 townies for San Myshuno alone), and Worlds that had no quota set at all would never receive any townies. The end result for many players is that all townies live in just three Worlds and most of them will have Japanese names. Several mods have come out over the years trying to address this, but unfortunately they usually do this through brute force methods that basically get rid of the Japanese nameset altogether.

Home Regions makes it so truly randomly spawned townies (like those coming to Worlds with a soft filter or tourist event) can come from any World instead of just three, and incidentally makes it so more townies use the more extensive “Default” name list. Townies spawning in Worlds with specific cultures are unaffected and come with all their special traits, skills, and namesets as they normally would.