This works really well in skiing, horseriding, and other sports. For autodidacts is would be a really good idea.I like the idea of a separate certification body. We need discussion, however.
So, let me be the devils advocate and propose an opposing idea:
There shall be no certifications. If you screw it up you die. Pick your instructor.
Too many certs, too little diving.
But do you want to do checkdives with a divecenter or not?
I hate checkdives as I am certified. Some divecenters let you pay for just 30 minute dive on a housereef to show some skills. This must be free in my eyes and be done before the first boat leaves so you don't miss a serious dive.
And from business point, how do you trust a diver which has no cert that books a 80m wreckdive on a ccr? This makes certificateless diving difficult I am afraid. Do you trust such people as a dive center?
The way of taking driving lessons will help, but will make it more expensive. And not always a second instructor or evaluator is easy available. So how do you see this point?
I think we need certs, but also need the option for autodidacts to just book an evaluation exam on a level. This is also the driving lesson way, you don't need to take lessons, you just can sign in for an exam. But you can take lessons if you want.
I think a price per dive would be nice. And then also that the student has the option to sign in for an exam if he wants, even if an instructor disagrees.
Now a course is written as 12 dives for this cave course, 8 dives for that, 6 dives for that trimix, etc. So you book a course of 6,8, 12 dives. Or 6 days of training. But will there be an average time to pass the exam also if you just want to rent an instructor for some exams? That is needed then. Also a very good outline for the student to know what he has to be able to show and know. So we need better books.
Just some points to think about.
And with this known, is the dive industry nowadays that bad? I don't think so.
I only think we have to teach the media. If a diver dies, they talk about a dangerous sport and divesites or caves must be closed. But do we close roads if an accident happens? Teach the media that diving is safe so that it is accepted like driving a car.