Thanks @malecjan but it is not exactly that. Here are some differences that I don’t think are achieved with the combination of features you mentioned. I mean, broad strokes it is along the lines of and probably inspired by part of what you mentioned, but I believe the workflow would be completely unique and sandboxed from rest of vault.
(Only while in note with a definition list created in note with ability to drag drop instances)
(The filtered note version to achieve definition list. Elements with ability to tag and achieve backlink functionality contained to within the note. Search limited to these special elements and tags contained to one note.)
Don’t get me wrong, I appreciate you looking over the idea and trying to summarize it, as unfortunately it definitely is a bit of a doozy.
(I don’t see editable transclusions being needed for what I envision but could make the editing process easier. I kind of thought clicking into the instances would bring you to the source element within definition list where edits would affect all instances. In practice, I do see the instances’ context being explained by separate list items folded within or above or adjacent to the instance.)
I may try to re edit my description in a new request so that there is a bit more clarity. Thanks for bringing this to my attention.