Thanks @EricShulman I seem to have lost my nicely crafter responce. I think this could be a button on missing tiddlers that have a title equal to a filter as per @Springer’s filter titles idea.
Be aware I have two cats that keep tring to stand in front of my screens, keyboard or on my lap. So dont be supprised if some typos slip in. Or worse as my spellchecker is not working in my app window to talk.tiddlywiki.
@nemo see Virually merging two tiddlers? Triddler stacks and form of monkey patch which is complemetary and somwhat related to your approach perhaps?