As I mentioned in previous posts, we need to establish an 'official history' of how the Planes evolved into their modern form. This history will be shrouded by myths, legends, and plain old spin-control.
The history is broken down into periods. Events within a period happen relatively close to one another.
Post-Faction War:
-The Nile River is formed, acting as the Egyptian parallel to Mt Olympus and the World Ash
-Beginning of the Roman Reconstruction of the Olympic Pantheon
-Loki murders Baldr, the first major sign of Ragnorak to be fulfilled
The Great Unhinging
-Ragnorak.
-The Pantheon War. Elvish, Gnomish, and Greco-Roman pantheons fight the Celtic, Dwarven, and Egyptian powers in a war over what will remain of the Asgard.
-Damnation of Toril. See my previous thread-note that while the Overlord succeeds in consuming Ao (and thus becoming Realmsphere's Overpower), several Faerunian powers slip through the claws of Baator.
-The Celestial Compact is declared null and void. Cosmic entities begin to freely intervene in matters on the Prime.
-The Wasting Silence. With so much turmoil elsewhere in the multiverse, the unthinkable happens-the fiends stop fighting the Blood War!
Post Ragnorak
-The Banishing. Furious at the reckless behavior of the warring pantheons, many Prime Overpowers banish the gods completely from their spheres. Magic on these primes tends to be restricted-sometimes forbidden altogether.
-End of the Pantheon War. While there are no clear winners, the Greco-Roman pantheon gained the most from the conflict.
-Monotheism, philosophy-based religions grow in popularity on the Prime.
-Baldr is reborn and becomes leader of the shattered Norse Pantheon.
-Beezlebub is disposed by Bane as Lord of the Seventh
-The Blood War resumes. Most planars refer to it as Blood War 2.
-the Lady's decree is lifted, allowing factions to officially return to Sigil.
-First record of Nexus.
It's late. More to come later.
I'm not so sure if I like all of these ideas.
All of the Post-Faction War ideas sound good to me, sure, but then suddenly the Powers go berserk, a single Crystal Sphere is devoured, the Blood War gets its first truce, and then the gods are even banished from their own worlds, which they're supposed to uphold because the Overpowers tend to be lazy? I get the feeling that you don't like the Realms, nor the gods.
Ok, firstly using Ragnarok isn't really such a good idea. I mean according to the legend even before the final battle the sun is destroyed with the moon - and since were multi-Spheric, they might all blow up. End of Crystal Speheres unless the ice giants learn to resist the effects of nuclear winter and become cannibalistic.
Then there's ofcourse Jormungand, who'll be free to devastate the Planes, and according to the legend, only two people would survive Ragnarok - all the gods would die (though Balder and Höðr will return from the dead)
So, no. Just no. Killing away dozens of the gods isn't the right way if you ask me. And as I happen to like the Realms, destroying them doesn't really fill me with joy.