So one little tidbit I enjoyed from 4e was the concept of travelling to the moons of Athas. It really adds a nice extra layer of planetary romance to Dark Sun. So the big questions I had for you all was how do you depict the Moon Gates of Athas if they exist at all? Were they psionic artifacts of the Green Age? Unknowable relics of the Blue Age? Or crafted by lunar visitors?
The other question I had was how do you depict Ral and Guthay? Are the moons more hospitable than Athas? What creatures live there? What level of technological advancement are they at? Do they rely on psionics, magic, or something else entirely?
I personally saw this as an excuse to depict the races that perished in the cleansing wars on these moons, keeping a few of the core qualities that makes an orc an orc, while also throwing plenty of curve balls. Also it gives a really easy excuse to have a bunch of eldritch aliens haunt the fringe myths of Athas.