Thanks for the link.
Very interesting comment about moving the genre forward.
When I came to Japan way back I was doing performance art. One of my initial projects, not completed, was to do performances on a new way to do the tea ceremony. I came here to study Ankoku no Butoh and my aesthetic was, and probably still is, influenced by Hijikata and Ohno of Butoh fame. I started researching spaces for the project. If you have ever been to the Osaka Sky Building, coming from J.R. Osaka via the underground tunnel you will have passed through one of my main performance space interests. I had very interesting reactions to my idea to move the tea ceremony from a tea room out into the 'real' world, none of it positive. I don't say that as a judgement about Japanese people but more as a comment on what the ceremony represents here in Japan and how 'moving it forward' is in itself an interesting concept.