Hi,

The people who answer questions here, for the most part, are other Firefox users volunteering their time (like me), not Mozilla employees or Firefox developers.

If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

I think that you can get a most recent folder list if you click the first arrow on the Folder line to open list with some preloaded choices. The second arrow opens the full folder tree.

See also this extension.

• https://addons.mozilla.org/firefox/addon/default-bookmark-folder/