As a Sig owner who is not upset about the A versus B packs because I believe I received what I was promised, I think that the rear map lights that are currently in the cars and were taken out of the Sigs (and perhaps early production cars) due to concerns about the design with a promise from George Blackenship that they would be retrofit to Model S vehicles built before the redesign are a bigger deal since the retrofit hasn't materialized and was part of the car when I ordered it.
Just FYI, the rear map lights are in my Canadian Sig VIN 2006. But it was delivered after some of the American P cars.
I have an A pack. The only thing that bothers me is Elon's announcement about the increased charging current did not mention that some customers would not be able to make use of it. Spending a few extra minutes at the Supercharger is a little disappointing but small potatoes compared to spending hours at a Level II charger.