Agree on Rescue recert. That is why I invite my previously-certified Rescue students to act as the helpers in a current Rescue class. Easy refresh for them at no cost.For Rescue to be more respected, it should require re-certification every so many years, much like CPR/First Aid does.
AOW can mean little more than the diver has done five more dives in the company of an instructor. Some instructors teach much more, but they seem to be the exceptions. There is apparently so much latitude as to what is taught ("Fish ID"--really?) that I don't know how anyone could use the card to gauge a diver's skills or knowledge.
Disagree on Fish ID. You've obviously never encountered a fish geek (like my wife). I swim around and see lots of fish; she swims around and comes out saying there are three new fish she's never seen before, five mating rituals going on, a strange absence of brown chromis, and larger-than-usual grouper. Her appreciation of the environment is greatly enhanced by her fish knowledge, and that is what she communicates in the Fish ID class she teaches and its follow-on, REEF.org membership and citizen-science surveys, of which there are now over 210,000!