Putting all of a nations/communities groups or neighborhoods in a container attached to the top level container rather than directly to the nation/community does make some sense. I may give that a try.

Using RW to manage physical game materials
https://youtu.be/KJQhFMjOOq4

I hope everyone enjoys their holidays whatever they may be.

My take on sharing.
Exporting
https://youtu.be/fuKd0hYqBDc

Importing
https://youtu.be/I5hDjJ605nY

Do changing the game system worked for you?

I'm sticking to realms that don't need changing for the time being.

Yeah new realms seem to have a much higher success rate currently. Mind you, my realm is fully exported and importing successfully. Well it was, 5e is on lock down currently.

Advanced tag features
https://youtu.be/Q86eAu2DTmE

Just watched this again. I have put the NPCs under their houses or businesses but as you point out, it does not work well when they can be in both locations. Prime example is one character that they could meet in the pub, his business, the temple, or even at his house or on the street in a random encounter. Seeing them organized like this is very counter intuitive for the way my mind works but I think is a far better way to do it.

After thinking about it a little more, I also added an "Occasional Visitors" heading to cover those people I did not want to show up as regular residents. I'm listing them as subtopics now but I'm thinking that there should really just be a cast list of visitors names with the actual topics shown as residents of somewhere else.

I like to use relationships for this. They won't show up in the navigation pane but they will show up in the topic for the store they own or the inn they like to visit.

There really isn't a perfect solution, yet but one of the reasons I'm so enthusiastic about RW is how much better it makes things.

Generally, the recommended use for Containment is permanent hierarchies... and geography is the example used. The store or home is unlikely to move in most cases, so containment works for that. Ownership, or the presence of one or more NPCs, though, is likely to vary considerably over the course of an adventure or campaign, so the Relationships (Owner/Subsidiary, Residence/Resident, etc.) are recommended for this.