I agree, but the problem is all of these are built on the assumption that there was something different to start with.
If what Ueshiba was doing was the same as what his students were doing, why didn't they understand his speaking? Why could none of them translate his words? And why could none of them approach what he did?
However, there were people who could do what he did: Horikawa, Sagawa and a few others.
Takeda was able to pass his severe power to his students. Why did none of Ueshiba's students show power of that level?
But Hugh's example of the translation of "open the legs in six directions" as "hanmi" is a great example of documented loss of the specific information that Ueshiba taught but which didn't make it through to the students.
The six-direction concept is not new. It's also not a part of modern athletics training. There is some relation to "isometrics," but it goes much further than modern athletics and also exercises less than muscles and tendons: this kind of "isometrics" gets down to an isometric of forces themselves and also isometrics of the "intent" of the mind--isometrics on the level of where the intention to move becomes actual, physical movement. Isometrics on the level between body and mind. Really internal.