I was recently trying to describe the features of FF3D to a young woman who is acting as my producer on a low-budge feature, and she kept asking me if the program "tells you if you're violating the 180-degree rule," which of course is the camera staging rule that two opposing shots, as in over-the-shoulder reverse shots, should be on the same side of the invisible eye-line between the two facing characters. At first I told her this was unnecessary and can't really be done, and depends on the skill of the storyboarder and so on, and then later I was wracking my brain trying to think of a way to put this excellent idea into practice.
My suggestion is this: Might it be possible to add a keystroke in Blueprint View (the straight-down view where actors are tiny icons), which would "turn on" a dotted line extending out straight from one eye of any selected character? In this way, wherever the character was looking, you could (1) follow the dotted line to see if it pointed to the actor or object as intended, and (2) easily determine whether the camera icons were on one side of that sight line.