By the outline panel I understand a navigation panel that contains a tree of sections, tables, etc. of the document. I guess it is updated at some intervals (I've just filed a bug report because in my case it is not updated at all). If so, then I suggest having configuration options for:
- enable or disable updating the outline navigation panel. Disabling could be useful when editing a very large project on a very slow computer.
- setting the frequency of updates: on a slow computer it might be useful not to update more frequently than each 5 minutes, and on a fast computer updating every 10 seconds is adequate.
Plus, a command for manually updating right now. This can be a keyboard shortcut, a right-click menu command, and/or a toolbar button.