Folders or Tags for Unique Creatures.

What Feature would you like to see included within TaleSpire?

A way to sort the unique creatures, preferably by both Folders and Tags.
The same mechanic would be usefull for every other user editable list, but i did not notice as much of a shortcomming there. (favorites, bookmarks)

What situations would this Feature be useful?
Over the span of my campaign, i have collected a bunch of reoccuring characters, which just make finding the ones i need now dificult, for example when setting up a new board, i would love to be able to filter for just the heros, and not have to go through countless of side Characters

Additional Thoughts/Details