Let us see what the Square sees

It would be helpful to watch a replay video of what the Square sees with the cameras and sensors.  This was a very helpful feature for webcam GsPro putting to tell what was causing interference when something shiny or whatever was causing ball tracking problems.  We could use a video replay to fix interference and other setup problems.  I would also like to see the ball spin being tracked.  Show which prints are locked on and how the movement was tracked.