> Feature request - ability to add 'notes' to a document. I'd imagine these as toggleable divs that would be able to be inserted anywhere in the doc, then made visible or not by toggling a class. When 'on' the visible portion would just be a small box/space/marker that, when clicked, opened up a larger div with the full note.

I think this suggestion fully qualifies as something they don't want to do, "[to create] unmaintainable tag soups and inline styles".