Copyright series many times feature a robust character listing that has at least proven very helpful for myself. When clicking the Related Tag button, it pulls up a list of clickable tags for every wiki link for the selected tag, which makes tagging groups of characters very easy.
However, some series have absracted this out into a list_of_*_characters, so they don't appear when clicking the Related Tag button. It's true that the list_of tags could be added to the tag box and selected, but that's burdensome, plus it introduces the possibility of accidentally adding it as a tag.
My idea would therefore be to pull in all of the tags from the list_of entries on a wiki. Thoughts?