[Pat McCarthy]

Well, I've got some opinions about the picture.

It is obviously a screen capture from Dave's animation.

It looks like a close up of a field element with some fun wavy action going on in the background that is irrelevant other than the blue to indicate the alliance for which this particular game element is for.

It seems to me that the reason we don't see the whole diamond plate circle is because it is mounted on something, possibly a vertical pole.

The diamond plate is a perfect circle, not oblong or anything.

If the scale of the diamonds in this render are to scale of real diamond plate (which they probably aren't), I would say that the circle is about 2 feet in diameter.

Also, I think I see a human player on the far right, along with the standard field railing.

As for the '5', I believe it is the point value for whatever the task relating to the the diamond plate circle is. If you remember in 2004, all of the balls were labeled according to point value.
This is supported by the fact that when you crank up the brightness or contrast on the image, you can see the outline of the diamonds, just as you would see if they had vinyl over the diamond plate.