I’m still unsure whether or not I’m using the great wheel planar cosmology in this setting. Currently, the storyline doesn’t really touch on planar mechanics except for the existence of a few planes:
- godly domains
- “prison plane” for elder primordials
- elemental planes
- faerie lands (could be similar to feywild or separate pocket plane)
So I could still use the great wheel, use 4e’s planar setting, come up with my own, or just leave it undefined until I have a need to define it.
By the general rules and laws the rule this realm, you will go with option 4. Until you want to defy reality as we know it.