First: as I stated in this episode, I myself am not really a tea person (I drink it, certainly, and enjoy it, but was raised in a very pro-coffee household). So a) please forgive any tea-related mistakes on my end and b) if this is a subject you are at all interested in, I cannot recommend picking up A Bowl for a Coin enough. It's a very interesting read, and as you might imagine there's a LOT that ended up on the cutting room floor.
This is also an approach I'm considering trying to replicate in the future with some other commodities that have taken on strong traditional appeal (the kimono comes to mind almost immediately, for example). Obviously I'm a bit dependent on what's available in terms of research, but it's an approach I really like in terms of taking a somewhat different framing of Japanese history.
Finally: all the research this took did get me interested in trying out some nicer teas, so if any of you have suggestions for a good intro to the world of tea I'd appreciate it!