I would be interested in knowing if you have other specific courses that you consider useless.
I'm waiting for the inevitable Boat Diver speciality to be bashed.
Yet Section II covers all the points regularly asked and debated on SB about liveaboards etc. Indeed personal checks which may have reduced loss off life on Conception fire, are covered.
I end up covering pretty much all of as part of our DM courses - since we predominately boat dive.
People fail to realise that some people need an excuse to go diving, they're more comfortable booking a course than just a basic dive with a stranger of unknown experience.
Not only do I cover the course material, but I also use it to improve the basic skills of the divers.
In my experience generally those who profess not to need further training nor assistance are often the worst divers.
I often go dive with another instructor to fine tune basic skills. In my real job, a student has asked how to carry out a specific operation - which has caused me to think and figure out the best way of going about it, which I would have never considered before.
Never stop learning