Mrjstark,
Richard told me that based on some recent experiences with room-challenging dealer set ups of the 5As, he is stongly considering including the rear firing tweeter on the 7. As you indicated, he felt it was critical when dealing with overly damped rooms. Although most of us probably don't use it, when it is needed it would be a shame not to have it, especially at this price.
While not fully consistent with a point source time/phase speaker, its contribution is not too different from the attenuated time/phase delay of the first reflection off the front wall in a live room. It adds presence and a larger sense of space.
I agree with the idea of a Vandy 7 thread.