What is the NPC townie gun?
The "NPC & Townie Gun" is an object which you can summon in debug mode ("Spawn > NPC & Townie Creator"); it allows you to make Sims into "Iconic Hobbyists", "Social Group Sims" (Tech, Gearhead, Socialite, etc.), "Garden Club Members", "Vacation Locals" (Tropics, Asia, Mountain, Toursits), etc. Or generate "new" ones for your hood. For example you can generate NPCs such as the gardener, maid, butler, food judge, etc.
Any chance for fixing the social group townie making, too? One of those groups is missing in the options.
I didn't noticed this, I'll check and see what can I do.
Edit: I just checked, and the interaction to make Sims into "Social Groups" DOES shows all of the townies, no missing options. Are you sure there's a problem with that?