... for your well-thought out responses. There is much here to digest and think about.
Non-action is quite the paradox and the hardest concept to explain as well experience. It is that philosophy that embraces ..."by doing nothing, the grass receives sunshine, water, and grows."
Bruce Lee did express formlessness exquisitely, comparing to water. Just like water, he became the form. Water in a cup looks different that water flowing in a stream ...
Regarding the physical/mental/emotiona/spiritual aspects, I had a teaching that talked about:
Giving with the Emotions
Holding/Transforming With the Body
Receiving With the Mind
Determining With the Spirit
It is when these aspects are out of balance -- giving with the Body - holiding the emotions, for example -- that causes us the most difficulties. So, we constantly examine our state to stay in balance so that we do stay aware and avoid the blindness or the other traps. It is these conflicted states that contribute, I believe, to our greatest growth -- and the repetitions are necessary. Each one, hopefully, building on the foundation of the other.
That is why many students do not stay in the martial arts. After knowing or learning all their katas, some turn around and say "Is that all there is?" ... never realizing that while one circle has ended, another is just beginning...