Are we not all about formulating and assessing arguments? If one's philosophical job in reading Plato is to assess arguments for what their premises say; what conclusions Socrates draws from them, and what other propositions are entailed by the propositions involved; then surely one is unlikely to find further considerations of plot or context of much relevance? What the premises and conclusions say (the propositions expressed), and what conclusions are entailed by what premises, and what other propositions are entailed by either (as determined by the semantics backing one's theory of entailment), surely requires no special attention to context within the drama. A few stray indexicals aside, it is unclear how any considerations of plot or dramatic context will be of much use to the job of figuring out what Plato is saying philosophically.