I was lucky enough to learn drysuit as part of my open water class. However, up here in the Pacific Northwest, it’s almost necessary in order to keep students comfortable for the course, especially if you are teaching them in December.
I will also admit that my OW was through SSI, not PADI, and our instructor took 8 weeks to complete the course not 5 weeks, 2 weeks, or two weekends (the OW options for the shop I completed my PADI DM with). In that sense I was lucky.
I really do think that these courses that pander to the whims of the free market, our "attention spans", and the legal problems are a bit sad.
What ever happened to getting guidance and wisdom from more experienced divers, and more experienced divers wanting to help less experienced divers get experience and education while actually diving. The whole idea of random acts of kindness leading to more and more reliable and proficient divers?
It seems kind of sad that diving education has to be bought up in little chunks that other divers make snide comments about, because the divers that paid for this education can be poor divers. I would like to think that any reasonable person with a genuine interest in diving would think that this sort of education would be good for them and the reason why they would buy into it, not knowing any better because dive shop tend to be the only source of information for the average novice diver.
Now I would say that for a minority of people, different types of diving is just a natural thing that you can pick up. I learned a lot of things by doing some serious reading and research, and then discussing it with other divers, and getting myself out in a pool or calm water and experimenting. But the majorities of people that I assisted in the pool while DM’ing are not that confident, or have other issues that impede their ability to go out and learn it themselves. Which leads to people wanting to get more education with instructors, and taking the specialty courses.
I personally wish that diving education were more like a apprentice/master program. Where it may take some time to get cert-cards, but it actually involved diving with a more experienced diver, and there was a practical attempt to give the diver more education under any specific cert card. For instance, getting to learn about decompression during a nitrox course.
Anyway, I suppose that I should end this diatribe.