Chris Chinn is creating a beautiful 4e setting with his players that he’s tagged 5 blades of Bahamut. The setting they’re building has a dash of myths from India and a lot of twisting stock 4e concepts to match a more stylized setting. It features airships, cults of Tiamat and Bahamut, a reason for the monsters (with a twist that makes killing them with impunity work out very well), interesting interpretations of the gods in the PHB (with a history that makes them tightly interwoven, with more Greek god like rivalries and relations), and more.
It’s a compelling read so far; I can’t wait to hear what happens when the PCs start wandering this wide world.