Overall I thought it was pretty good. One thing I might like to see is other options for getting into better shape other than water activities. Simple jogging or biking would do many hopeful-divers well...
Though I do think if someone could perform the physical tasks you outline they would be more than prepared for an open water course.
This is one of the few useful posts on this thread, thanks for offering something that was actually constructive. I may do just what you mentioned.