I got a good amount of enjoyment from this puzzle! The clues were challenging, but not too much so, the theme was recognisable, but I didn't guess it before I was intended to, and the final step was tricky but not impossible. Really hit the Goldilocks zone for me on nearly every step and also I had a good time decoding the Playfair.
A great puzzle to end the 2024 Listener year, the tenure of John Green, and the legacy of Dysart.