> If that's true, it may explain the constanrtly changing nature of the size of the plains.
He's right about his source but that doesn't explain why the planes change. There's very clear reasons why they're altered in each edition. 2e -> 3e was because of Vecna, 3e -> 4e was due to the destruction of the weave and 4e -> 5e was due to the Second Sundering. Also as mentioned the owners of the realm cannot stretch the planes to an infinite degree considering unwanted mortals can still traverse a layer, it just takes a lot longer.
As for 5e itself I don't remember a lot about it besides that there's an infinite number of different
Material Universes. But I don't know if the planar layers of the Outer Planes are infinite.
> I'm not sure if this would be Low 2-C or 2-A, considering the Astral Sea.
In 4e the Astral Sea is an
infinite plane that has certain finite realms and the
Elemental Chaos is the same
> Which means that, technically, we can consider any feat to be on the tiers you've said if they happened during those editions
I disagree pretty heavily with this for the reasons mentioned in the first paragraph.
> I believe this would be a 2-A feat regardless of edition
Not in 4e. In 5e it might be, but 4e the Abyss is just explicitly not infinite. Although I don't know how the multiverse was structed in those times so it could be 2A. Its just hard to use considering the various contexts
> The Lattice of Heaven was destroyed by a collective group, but upon doing so, even realms so far as the Far Realm (which is essentially outside this multiverse) were harmed.
It didn't harm the Far Realm. They just used it as an oppertunity to breach the multiverse
> The Lattice linked to all realms. I believe this would be 2-A, at least, as it leads to and damaged all realms of the multiverse. The Astral Sea was permanently damaged and altered, and many gods died.
Linking all realms isn't a 2A feat, but it damaged an infinite plane so it should be good either way.
> To save it from destruction
That event wouldn't have destroyed the Astral plane, just open up a rift for others to invade which is why it needed to be closed
> defeated a goddess that doubled as the embodiment of an outer plane.
I think that was more due to hax/special effects than anything going
by the source . But even if it was all due to his power, Lakal was finite considering her realm broke into thousands of comets and her worshipers believed they could bring her back if they assembled all of her body parts.