Tags are currently an orphan for being useful as an organising concept.
Would you consider adding an option to a frame to assign a tag, and the function of that frame then becoming an aggregator of all content on the board with that tag?
ie, it would create mirror copies of all contents with the frame tag and link back to the original on the board?
An idea like this would still give us the ability to add board content around that frame as relevant to why that tag exists and it’s significance and its background assumptions and generally add detail to the concept of the tag..