I think there's a lot of wisdom in the tragedians [...] which is (surprise!) often more religious than most modern tellings credit

I think there's even more to it than just that... consider that Aiskhulos was both born and initiated at Eleusis; was inspired to become a tragedian by Dionusos in a dream; "invented" the trilogy (which, as I've mentioned, I think really came from the threefold mysteries of Isis, Osiris, and Horus); was put on trial for revealing the mysteries; and the plays we know about explicitly concern Greek variants of the Horus myth (Polunikes vs. Eteokles is Osiris vs. Set; Orestes is Horus; the Danaides fleeing the Aiguptioi to Argos are Tefnut fleeing Shu to Nubia; etc.)...

More on this soon!