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Pedantic Grognard
As it says here
So, are we also going to see the elimination of deep water from D&D? I mean, the bottoms of oceans make pretty poor adventure locations. The skies, too; who adventures at 30,000 feet in the air? Why stop at getting rid of the Elemental Planes, if we're going to get rid of places that are "boring"?
It's not like we were exactly lacking places to have planar adventures, as any fan of Planescape can attest. And it's trivial to add new planes while leaving old ones intact; it's not like, say, the geography of Faerun, where the presence of Kara-Tur on the eastern end of the continent stops designers from putting something else there. These new planes could co-exist perfectly fine with the old ones. Why get rid of the old ones, unless your goal is to change things purely for the sake of change?
The D&D cosmology — largely unchanged since 1st Edition — is receiving its share of scrutiny as well. We're making revisions to the cosmology so that the planes work better as adventure sites. Case in point, the individual Elemental Planes (as decribed in 2E and 3E) aren't the most interesting adventure locations; their sheer inhospitability, vastness, and uniformity discourages exploration, and the creatures that dwell there are predictable and easy to thwart if you're packing the right spells. (Of course, these planes don't hold a candle to 2E's hilarious Plane of Vacuum, which is truly the antithesis of fun.) In the Wizards Presents: Worlds and Monsters book, we'll present in more detail 4th Edition's alternative to the Elemental Planes of Water, Fire, Earth, and Air. My hope is that the cosmological changes will excite players and actually encourage DMs to set adventures in these far-flung locales.
So, are we also going to see the elimination of deep water from D&D? I mean, the bottoms of oceans make pretty poor adventure locations. The skies, too; who adventures at 30,000 feet in the air? Why stop at getting rid of the Elemental Planes, if we're going to get rid of places that are "boring"?
It's not like we were exactly lacking places to have planar adventures, as any fan of Planescape can attest. And it's trivial to add new planes while leaving old ones intact; it's not like, say, the geography of Faerun, where the presence of Kara-Tur on the eastern end of the continent stops designers from putting something else there. These new planes could co-exist perfectly fine with the old ones. Why get rid of the old ones, unless your goal is to change things purely for the sake of change?