The last chapter was, obviously, my favorite, but I appreciated both Secunda's overall argument and the sources he makes available for inviting both learners and academics to think more seriously about the context of the Gemara.
(And the framework is far more helpful for the laylearner because there's no point in the future where I envision learned Pahlavi, but to be able to grasp/wrangle other people's scholarship in my own attempts to negotiate with the text is valuable.)