I believe PADI has done this recently with the Tec Rec program. The TEC Deep Diver book that was in use pre-dated the TEC 40, 45, 50 program in place now. Rather than discard 000's of books, PADI aligned the text with the newer program by supplementing the text with additional materials that instructors printed off a CD for each of the new TEC levels.
One would think that if PADI was in the process of transitioning to an off the bottom standard, they would have begun implementing that strategy through supplemental materials. It may be their intention to go that direction, but until they formally modify their standards, instructors representing them would be compelled to comply with the existing standards in order to maintain PADI's standardized Quality requirements.
One would think so. NAUI's Instructor manual is made-up of a loose leaf binder in-which standards can be easily removed or inserted. Instructors may also be sent an e-mail from the NAUI Office to provide an update to policy. Other Agencies that I'm affiliated with do the same thing. If the Agency feels that it's important, they don't take a year, write articles and still no official change takes place.
That's not to say you can't tell your students that you're offering some extra above and beyond training that you feel will boost their performance level (i.e. "let me take my PADI hat off for a few minutes"). But it isn't within an instructors' purview to then require mastery of the above and beyond skills for the student to be certified to the formal PADI standards.
I agree. Regardless of the certification Agency, there are some things that the Instructor must cover in the manner described by the Agency. Some Agencies however, are more restrictive than others. This has positives and negatives; some of which you've mentioned.
If this discussion were about instructors "dumbing down" their assessment to pass more students in less time, rather than up scaling the assessments to make a "better diver", I don't think there would be nearly as much emotion as we've seen in this thread. When it comes to a standardized Quality program argument though, "dumbing down" and "up scaling" are identical failures to comply with the formal standards. Some might argue that there is a significant difference in the ethical implications of each, but each failure may result in cheating the student. In one case the student is certified with substandard and potentially unsafe skills, and in the other case the student has to pay for additional training to master a skill not required in the formal Quality standards.
That experienced instructors argue so passionately that it is acceptable to increase the rigor of a PADI course beyond the formal standards is an indication that PADI has not adequately enforced its' formal Quality standards at all levels of its' organization. The absence of that uniform enforcement of the formal Quality standards would seem to be the root cause of the wide variation in observed skills seen in newly certified divers.
I see that the diving environment should dictate the make-up of the training program. So I don't see that one "Universal Standard" is either reasonable or preferred. What most organizations have done is establish "Minimum Standards" (based on ideal conditions) and allowed the Instructor to add material that they believe is reasonable for the diving conditions. I see this as a strength, as it focuses on safe diver training and not solely the advantage of one standard that makes QA easier. I would rather error on the side of education and diver competence. This does however put additional pressure on the Agency to certify competent Instructors. It usually makes the Agency (and any LDS flying that Agency's banner), less competitive. Perhaps we can begin to understand why things are being done the way they have been...