What is the point of stopping gods who want to have closer realms to have closer realms? I feel like this does step on the feet of anyone who will have land-based spheres (which again, are just not that well covered in Greek Myth), which yeah, include me. This was my idea for a realm:

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Description:
The Purlieu. An ever-shifting wildland with jungles and mountains rising and disappearing in days, home to the most fierce of storms and beasts, untamable to the point it can rust away metal and crumble recently built fortresses into ruins in mere days. It connects itself with Galbar at random, mimicking a road, bridge or field out in the frontiers of mortalkind and enabling people to walk into the endless wilds without even noticing or luring ships to its shores once they no longer have the eyesight of any land. It is also where the seasons go to when they are not ruling over Galbar.
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I can adapt to a heavenly realm if necessary, I did have a secondary idea involving stars and some leftover Ilunabar stuff, but I feel this would inhibit the potential of land/earth realms and would be to the detriment of the game.

Of the options presented, I would go with C, as that is an aspect present in the source of what we are doing, with things below the moon acting differently to things above it.