I hate to be a debbie downer, but I don't know how or why we're discounting the fact that the rear seat came detached.
I was as excited as everyone else when I saw 5 stars, but as someone who would be driving the Model S with a child in the rear seat, there is absolutely no way I could ever take that risk. That's a 35 MPH crash, and the person unlucky enough to be sitting in that rear seat would have either been killed or seriously injured.
Imagine it at slightly higher speeds.
I think this is a much bigger deal than it has been made out to be in this 5 pages, and either there needs to be an explanation, or Tesla can expect to see this video played in front of a jury the first time a rear seat passenger is killed in the Model S. In other words, there needs to be some sort of explanation (this was equipment, this was modified, this was prior to the recall, something).
The projectile rear view mirror is a concern too, but not nearly as much as the backseat turning into a ejection seat.