Episode 36-37 got a little lost for me but I feel this is the build up to the finale. I will mix up the two episodes here a bit too.
Date's and Furuta's antics certainly caused a scene and made people question imperfection. What I did ask during the episode was why the fuss about art and imperfection? But I feel this might be what makes an aesthete, they are willing to live and die for it. Not just to play around the edges (like us postmodern people

), but make seem like it is the all and end of all they live and strive for. Senno will not stand for his aesthetic convictions for creative freedom and also the philosophy of imperfection to be stamped upon and destroyed by the public and ultimately by the great warlord Hideyoshi who's 'mastery' of aesthetics is a political ambition.
However in courting Tokugawa he felt he has destroyed a natural aesthetic process of a simple man. Tokugawa's poem without the other lines is like the shock of a Zen koan to Senno no Rikyu. So powerful and simple is his taste, he felt all his scheming is no better than Hideyoshi himself. Combined with his conviction, sins for forcing imperfection through political plot and his feeling that he has stopped an aesthetic flowers blooming, Senno will want to go down greatly. He drops an art treasure to anger Hideyoshi just to do that.
I read a book on tea aesthetics so I know what happens to Senno no Rikyu (I'm sure any Japanese person who studied some basic history will too. Actually after some study he probably is one of the greatest persons/myths in Japanese history from
http://www.japanese-arts.net/teaceremony/teaceremony_index.htm so this must be well known) but I hope Mashimo will make it beautifully imperfect.