I just have a small suggestion. When creating a new project the default location is inside the Godot application bundle. Would it be possible to add a default Project location to the setting and have a favourite location selection area. Perhaps with a add/remove buttons. Similar to that could in Blender. I think it would just make file system navigation easer. In the favourite section you could have any frequency used location. Perhaps this favourite location window could have a hide button as well, so when you are loading and saving form the project folder it would be hidden. Only being revealed when navigating the file system is needed.
Hope the dev team think this is a worth while idea.