Maybe this is already a thing and I just don’t know it yet (I do mostly use the mobile version) But it’d be nice if there was some kind of Tag Manager for story owners to manage tags. I mean sometimes you can go into chapters and edit them, but sometimes it’s unclear where tags are and with some stories being over 1000 chapters, it’s kind of impossible to find them all especially ones added in later chapters. Honestly the story manager/chapter needs some work overall, but if there was just the ability to remove/add/manage tags from the main story editor, that’d be great.
I think the tag system will change with the next version. (CHYOA doesn't use different versions for mobile and desktop. So it might just look different on mobile and the features might be found at another spot.) Removing tags from the edit story page might be useful. Adding them on the story page won't work as long as they are assigned to chapters.