Wyrmshadows said:Can D&D, by the book, based on the assumptions of the game and not individual campaigns, support a game that makes epic levels more meaningful than just cosmic dungeoncrawls? If we look at the myths of our cultures these mythic heroes like Beowulf, Achilles, and Hercules are exceedingly powerful but their stories become foundational tales representing the values of their cultures. Should D&D RAW give help to DMs providing them with tools to make the PCs epic characters more than silly fantasy superheroes and instead icons upon whom faiths, knightly orders, empires and whatnot are built upon?
I note first that you seem to conflate "mythic" with "epic", and you might want to examine that a bit. I am not convinced they are the same.
I think this comes down to the fact that the details of the ruleset does not strictly dictate the subject matter or style of play. While D&D (and d20) do not do everythign well, it can do many things well. And, there's only so much one book can do in the way of giving you advice about any particular style of play, if only because there are so many styles.
You can write a whole separate book about mythic play. You can also write a whole separate book about dungeoncrawling. The authors have to pick and choose subjects, based on their best guess and information about the core audience. They should give DMs more tools in the core rules if and only if they've got reason to believe a large section of the market wants to play that way. Otherwise, it is the subject for a supplement, possibly by a third party.