It's surely a neat idea, but it might not be very easy to do, because the standard Simconnect menus don't allow drawing any kind graphics, just text.
Under FSX, trying to do that, will be a very ugly hacking mess and with lots of potential conflict with other apps. It MIGHT be doable in P3DV4, but we'll have to research a bit into this, because the drawing API keeps being updated at each version.