Is there a hotkey that can be assigned for “collapse/expand present item”? Ideally, one that toggles an outline item (including headings) open and closed? It would be great to have. OmniFocus has a good implementation: in the outline view there, you can collapse/expland one or all items.
What I would really love is also to have a way to collapse all except for the present block. That would really show the advantages of the document-based, headings-within-a-page approach: an evergreen note might be 4 pages long when fully expanded, but if there where eight h2 headings, I could quickly switch to looking at only a half-page of text (with all but one heading collapsed).