It would be nice if you would add two basic features present in most applications:
- have a Hide Others option under the Outline menu. Present in every app I've used except Outline. Nice to have when trying to focus in on just Outline. If I recall from my past Mac programming efforts, this is a simple add.
- double-click on the window title bar does the same as the Zoom menu item - flips between the window state that fills the current screen vs back to original size. Nice short-cut to have the double-click do this. Have seen in most but not all apps but is a nice shortcut.