.....That training has been lost to modern aikido.
.....the training has little to do with jujutsu techniques.
.....The really big kick in the pants comes later ... After you've trained and have some aiki ... Just what in the world was Ueshiba meaning when he talked about spirituality?
Basically, I really agree with you, except on one point. If we think of Aiki as only a way of changing the body, or that it only "lives at the physical level" then I feel we are limiting it to only that level of training and experience. To me, it goes way beyond that, into the energetic and spiritual realms as well. This is just my own personal experience.
In fact, I think this is what distinguishes Ueshiba from all, or most of, the others who "got or get Aiki."