I didn't read this entire thread......but my take is that the current OW courses are woefully insufficient and they need to really revaluate the term "Mastery" of skills.
I agree that there is an issue, but I’m not sure it’s with the courses themselves.
The courses are able to produce competent divers. Ultimately, it ends up in the hands of the instructor and the student. Unless someone complains, the agencies aren’t really aware that an instructor may not be following standards. And who is to tell them. The student is probably not an expert in the standards of the course. So, if the student ends the course and winds up with an OW cert, who are they to know if their training was sufficient or not.
The problem is that there is a lot of trust, that may not be earned. There should be some oversight to ensure standards are followed. At work, I’ve dealt with a lot of industry certifications. We use companies that specialize in certifying other companies to certain ISO, AS, SAE, etc. standards. They do this by auditing. On a regular basis, these certifying agencies get audited themselves. Sometimes an auditor from another company witnesses an audit. This isn’t perfect, but is better than what happens in the scuba industry.
The agencies should take pride in the skills of the divers they certify. As an alternative to the proposal in the OP, the agencies could also employ secret students. Basically, an agency employee that audits a course/instructor without their knowledge. When I was in high school, I worked in retail. Occasionally, we would have a secret shopper come in to evaluate the store and employees.
This would be difficult given the number of affiliated shops, but not impossible. The agencies would not necessarily need to ”secret shop” every LDS. If word got out of revocations or suspensions, that might improve training.
The problem is that currently there is little incentive to do anything like that. Suspending or revoking affiliations will hit the bottom line of the agency, as they will no longer get a cut of the certifications the shop puts out. So, until the consumer demands better, I don’t see this changing. Unless the training is absolutely atrocious, the student doesn’t know any better.