See here for sketches in draw.io: https://www.reddit.com/r/Anki/comments/epxd53/addon_to_view_only_those_tags_from_a_specified/femgu7y?utm_source=share&utm_medium=web2x

1. an additional button in the browser + remove sidebar
2. new interface

• opened on button click
• crucial feature: when deck(s) selected, hide tags and models that are not used within the deck(s). Vice versa for selecting tags and models.
• selecting still operates the same search syntax as currently
• what is not shown but should be included:
• collapse button, where the (+) expand button has been activated
• option to show unused decks/tags/models anyway
• …?
• The emojis and colors are not really necessary
• Probably it's better to have decks, tags, and models not side-by-side but above each other (like in the current sidebar). This benefits deep hierarchies.