I’m sure this may have been mentioned as an enhancement, but it would be nice if there were multple levels for the project sidebar, not just two (category and project). I can think of many reasons why this is necessary and practical. It’s also a pretty commonplace feature in other note-taking apps like Bear, Apple Notes, Ulysses, Quip, Zoho, etc.
This has been requested more frequently, we’ll take it into consideration.
A third panel between projects and editor with a list of notes (like Bear) would be very useful. It would be nice to have the visibility of this panel toggle-able as well as to have different options for sorting and filtering (icons at the top of the panel for example). (I’m not really fond of the pop-up note list we have now.)
It’s very unlikely we’ll go for such a setup I’m afraid, we have on purposely opted to prevent a third level of hierarchy.