[Mithras]

Does taking over a priestly beaurocracy ala LA Mictlan count as inspiring cults?
And perhaps I'm reading to much into it but the idea that Atlantis is just some generic fish/frog men thrown in for the sake of it doesn't sit very well with me. To me the underwater nations should at least have a theme along the lines of the northen and middle eastern themed nations (dilution of blood lines, invasion of humanity.) Or those nations affected by Ermor (Corruption.)

I would suggest that the seas start in diversity and slip into a uniformity (i.e. everyone goes mad) More than everyone else the story of Atlantis is the story of disaster and exodus, surviving on the fringes of the world they once knew.

Or they're just generic fish/frog men taken out of D and D and dressed up a bit.