As I look and read about the various methodology's being taught today, it makes me wonder what the “real” agenda is? Should not a system be both, as simple and effective as is possible? What I am (more) commonly seeing, is an ever expanding collection of motions that are far more complicated than are (IMO) necessary to accomplish the same results.
The methodology that Oyata taught, was never complicated (to perform). That didn't mean it was easy either, just not complicated. But it does require "practice". In our Instant-Gratification society, that requirement (alone), is often too demanding for the average student.