It would though. If every spark said 'No, this is stupid and i'm not doing it. Let's see you police it, LOL.' they would HAVE to put sensible rules in place. You know like letting qualified men actually install basic circuits in houses without having to pay for it. The qualifications mean nothing if you can't use them to carry out the actual work they relate to.
IMO the qualifications should be 18th, NVQ, AM2, and full testing and inspection. Once you have those you should be able to touch any install you like without having to pay because passing them proves you know how to do electrics safely. The only thing i would change about this is i would make the 18th test an actual test of your knowledge on the regs and not just a 'can you find it in the book' exercise.
If this isn't good enough, then instead of introducing stupid rules like schemes they should simply make the qualifications more in depth and harder to achieve.