Right then, got it:
1) Let the qualified and certified TPs/FTEs do the tricky bits (envelope expansion, handling characteristics, new and difficult stuff) and be accredited by virtue of them having completed a TP/FTE course.
2) Let the unqualified and uncertified pilots and engineers do the systems/avionics work, but understand they're not TPs/FTEs because they haven't completed a relevant course.
3) Let employers decide who to employ based on their professional qualifications and courses completed, as well as their abilities. I agree there must have been some chimps who passed the 'official' courses, and I imagine there must be some good guys who could pass if they had the funds/backing to get through. But the fact remains, any idiot could take 17 years to eventually get his PPL, attend and fail an 'official' course, and still call themselves a TP/FTE because there is no formal accreditation. Sounds daft and dangerous to me. Bring on proper accreditation, even if it is focussed (in the same way a doctor/lawyer specialises in a certain field rather than trying to do everything).
4) My nan's got her BAE interview next tuesday. Any tips?
