It would be extremely helpful for me in navigating my large project if I could use the directories visible in the sidebar documents tab to bring up the file open dialog showing the files in a specified directory.

That is, I'd like to be able to right-click on a directory node in the sidebar documents tab and see an "Open File..." option. When I select that option, the file selection dialog comes up already showing the contents of the directory I right-clicked on. That way, I can immediately select a file and open it, rather than opening the file selection dialog in the usual way and having to navigate manually through my directory hierarchy to find the file I want to open.