Whatever next? Perhaps a separate licence before you can fly a tailwheel aircraft, with another licence for open cockpit and yet another licence for tandem (cf side by side) seating?
What seems crazy to me is that I fly a 255kg max gross weight aircraft that is classed as a group A aircraft because the stall speed is way too high to be classed as a microlight. The crazy bit (if I have understood the discussion above) is that I would not be allowed to fly it without further training, a GFT, another licence and a stiff fee, if it was more docile and tame through having more wing area and a lower stall speed.
Again let me state that I am a great supporter of the NPPL and I don't believe these new restrictions were caused by the NPPL. The introduction of the NPPL should not change the validity of the old CAA licence.