That's because there aren't any!
Not quite true. The two yearly medical for the old geezers, the ability to carry three pax, the aircraft weight of 2000kg, the reval requirements's etc are all the things most people want to do. OK so you can't add any ratings or fly at night. (I am wrong about this after checking) Neither can NPPL's but that was a great step forward as this one looks to me.