The BRAND feature is an absolut great approach.
We, however, use it in a slightly different way as it might have been intended for.

We work in destinations. Those are usually countries, regions, cities and such.

In those destinations assign our customers and we created a nice nested brand architecture which provides us great aggregated insights on a destination in the form of.

Europe
Germany
Bavaria
Allgäu

Africa
South Africa
Western Cape

etc.

The caveat is, that the category level is bound to a market which is understandable and we can live with this.

However, what I am missing is root level, an agency level that shows the same insights across all markets defined and therefore across all subcategories. Just like a World View.