Glyfair said:
I don't think Shavarath necessarily has alignment groups.
Not necessarily; that doesn't mean it couldn't.
I'm not saying that, with enough detail piled on, you couldn't make the Eberron planes into something very different from the Manual of the Planes planes. You certainly could. I'm only disputing that it's necessary. Filling in the blanks in the Eberron cosmology is extremely easy because most of its planes are blatantly cribbed from previous cosmological work. For example, take the Paraelemental Plane of Ice, add in realms based on the Iron Wastes (from the Abyss) and Cania (from Baator), and you've got something that fits the description of Risia exactly. The Elemental Plane of Fire plus a realm based on Phlegethos (from Baator) and a few wandering balors is Fernia - not just
like Fernia, it
is Fernia as we know it. Take Limbo with no modifications at all, and you've got Kythri exactly. Take Arcadia and change its alignment trait slightly, and you've got something indistinguishable from Daanvi. Make Pazunia and Avernus and Mercuria three realms in a single plane, and there's Shevarath.
I know Eberron is unique and special and brilliant and like nothing ever seen before, but its planes really aren't any of those things. They could be made different, but as things stand they aren't. They're very, very close to the planes that TSR and WotC have already detailed. They could even
be those planes - distant realms in them with fluctuating planar connections - without changing Eberron at all.