Having watched the first series of Jonathan Ross's Japanorama, particularly the "Madam Shirota's Guide to Etiquette" section, I think it would be a great idea if, in JCCs, you spent a bit more time going over 'normal protocol' in Japan.
A lesson I particularly enjoyed was the JCC covering 'warikan', in which you, in addition to explaining clearly the concept of warikan, covered good Japanese table manners, such as never passing food to others chopsticks-to-chopsticks, or not stabbing food with your chopsticks.
More of that would be excellent!