I feel as though AOW should be able to be surpassed by a diver if he/she can prove sufficient experience with the specific skills and techniques taught in the AOW course.
The problem with this is trying to separate the ones who actually have the experience from the log-book-liars
You ever have to read people's resumés for your work? Sometimes you'd think every person you ever met was some kind of super-hero.
I don't know if it should be required for Rescue or for DM. For Rescue if you could convince me that you had the navigation skills, enough diving experience and raw diving ability (buoyancy control etc) going in then I don't see anything in the course that really requires the cert. AOW is largely experiential anyway....
For DM I would like to see a whole different approach. AOW and Rescue are, by themselves, not good enough starting points for becoming a DM. The job a DM has to do (usually) can be much more involved and may require skills and personality traits totally unrelated to diving. In terms of diving, Rescue should obviously be required but so would 250 *real* dives in a variety of different conditions and the skills from about 6 specialties. DM's are often vastly under-trained and far too inexperienced coming in and that leads to vastly under-trained and far too inexperienced instructors too.
But that's probably worth a poll of its own
R..