I'm reminded of a response to another thread on HN a few weeks back about organizing physical documents. Many commenters had very sophisticated processes with scanning, OCR, indexing etc but there was one commenter who organized their documents as a stack of paper, divided by year. The use case for documents might be a bit different because the number of times you're likely to need a document is probably quite different the number of times you will benefit from reading a note.
A more concise reframing of the above: for those who have adopted a disciplined approach to note taking (geared towards retrieval and linking) do you get enough value from the disciplined approach to encourage us unstructured notes-everywhere to invest the effort of adopting a better process?