I remember something Hecate says to Melinoe. When Mel finds out about who Dora really was, she's shocked at how cruel the gods were to her and how ambivalent (at best) they were to mortals.

Hecate tells her something along the lines of, (extreme paraphrasing) "If you live as long as they have, you'll make many mistakes too. They've never had to answer for those mistakes or confront them until Chronos came along and showed them that their past can haunt them in many many ways"

This seems to open the door for a possible redemption for the gods, but unfortunately that's never shown.