It would be nice to have a multi-level taxonomy. For example.
taxonomies: category: "categories" person: "persons" annotator: "annotators" author: "authors" recipient: "recipients"
And if I have in the front matter
authors: John Smith, John Smith will automatically be added to the list of the taxonomy
I know that this can be done by adding
person: in the front matter, but the hierarchy would be more convenient.