Sorry - I don't agree.
The NPPL was evolved by those in the industry who are aware of those aspects of the JAR-FCL which they consider to be inappropriate for basic day VFR. The exam question is a different topic, that may well change in the future.
It is now possible to start with a NPPL with Microlight aircraft rating, then add a simple SEP rating at a later date when the applicant can afford it. Then, when the required JAR-FCL total of hours and mandatory training items have been achieved and the medical upgraded - all of which costs money - an applicant can upgrade to a JAR-FCL PPL(A).....then an IMC rating.....then a Night qualification.....then a CPL(A).....FI(R) rating....IR(A)....ATPL etc etc. Think of it as a modular, more affordable way of learning to fly.
After all, it was industry who said they wanted the NPPL - and the CAA is entirely content with the way it's been achieved.