Most people do the CPL exams (rather than the ATPL) because they want to satisfy the theoretical knowledge requirement of single crew flight operations for pilots who are paid professionally - and I agree BEagle that the syllabus should reflect this and make it relevant. The CPL misses the theoretical basis of teaching and learning which would be an add on. I can see why they want to ensure that instructors have a good theoretical base - this is not assured by the FI syllabus alone that only teaches a potential instructor for a few hours and they are not formally examined - other than in the air and a quick chat before the flight test (no written assessment). EASA are following the FAA ICAO model - although the CPL exam in the USA is more accessible and cheaper - less of a barrier...
On problem with the CPL is in reality its a subset of the ATPL question bank and therefore inappropriate - needs updating
Of course there is no shortage of instructors at the moment anyway and relaxation of the rules would flood the market depressing wages below national min wage but thats irrelevant to the arguments above
