I found ISO Country and states codes and think it could help us to get a clearer understanding of the areas we are working on, as quite many of the countries we are working on are very big, different in structure and communities.
Here is the Wikipedia-Link, that explains the standard:
For example, as we are currently working with a mapping community in hungary/budapest. Their budapest region code is 3166-2:HU-BU
I just noticed, that those codes are not used in OSM, nor in Google maps, but would be very useful to get an overview on spatial areas we work in. From just the dots I find it somehow difficult sometimes to get the magnitudes we are working on. When it is about city areas, it is quite easy to get some understanding of territory, on the regional level I see that codes could help us, as they are easily machine-readible.