I haven't used a name generator for planets. Numbered planets like Bhaglune IIi are named after the star system they are in, so for those I've usually pulled out a star atlas & picked an obscure star name. For others, I've discovered that naming them after mountain ranges found here on earth work pretty well. I'm using Jundu in my Cyberpunk story, it's named after one of the mountain ranges that anchor the Great Wall of China.
I like to check out what other players & authors of the 5150 universe have done before I go off creating things. There's a race for example that only controls one world on the old 5150 maps that I envisioned as being like grey aliens from close encounters, but actually turned out to be more like Star Wars Wookies. In the movies there's a "continuity master" whose job is to make sure everything in a scene is the same from one take to another, to cut down on things like water bottles appearing in Game of Thrones scenes. So I try to preserve some sort of continuity when I write 5150 stories if that makes sense.
Amado mio, love me forever and let forever begin tonight.
I'm not sure you can have a Hive World anywhere outside the core 3 rings -- unless it's a literal Bug Hive World. A Hive World in scifi is typically sustained by an Agro World in a structured, highly specialized economy directed by a central government. GP seems somewhat authoritarian, but not structured as a centrally planned society.
I think more practical would be Hive Cities, so to speak -- more like a Judge Dredd environment with highly industrialized planetary economy with the populations packed into dense urban mega-plexes. Robotics would do a lot, but maybe there's a lot of stuff only sapients can do -- then maybe it's a Corporate World, or run like a Crony Corporate system, and they find that they have lots of sapients who can do the work cheaper than a bot??
Counter to that is that over time that type of system tend to implode demographically as people stop having kids (for many factors -- both affluence and oppressive poverty and uncertainty depresses pop growth), so you'd have to have some special combination leading to Hive Cities.
So what could lead to Hive Cities and dense population continuance?
1. Maybe it's a Class 2 world with limited livable real estate that forces people into mega cities? 2. Some unique valuable resource or economy that is a lure for people to go to the Hive Cities? 2. Some religious/spiritual drive to have kids keeps population up? 3. Surrounding worlds have poor economies, and people flock to Hive City on Planet X for jobs? 4. Cloning or Replicants for cheap workers - maybe that's how the Hishen evolved?