I will patronage this fine establishment.
(Sorry, but the title's nicer than the other thread.)
One thing I definitely want-speaking of *above* ground-is moon(s, as in 13). I also want constellations to have souls, and maybe actual intelligence, since they're-mythologically speaking-beings who have been set into the sky.
For the sake of pure, chocolate, self-indulgency, I'd really like to see a Sea of Silt--ala a "desert" where the sand is so fine that it would basically function as quicksand, but that could actually be sailed upon, with the proper equipment.
There could be occasional oases that would cause the silt to turn to mud, and rare rainstorms would do the same, in which case you'd either be stuck in this completely inhospitable place, until the "sea" dried out again, or you'd have to sail around more permanent wet areas.
All manner of bizarre critters could live within the silt, filtering it for nutrients. Just to make it interesting, maybe the silt is highly fertile, but only a few plants can actually grow in it, and most of them are single-celled (perhaps the silt has an equivalent of tides, and is constantly moving).
Maybe the silt sea exists on one of the moons?
Even more indulgent, and even less realistic, I'd love if there were a sea of black wine (as in actual wine), that, if drank, made you lose your memories.
In the center of the sea could be the entrance to the underworld, in the form of a vast whirlpool.
Actually, I'm fond of the whole "7 seas" idea.
For that matter, along with all the realistic suggestions I'm sure will come through, I really want to see some fantastic geological elements.
Nothing too impossibly overblown and out there, but a nice variety of things that can't (and never could) be found on Earth, except maybe in our myths.
On the mythical side, a migrating forest/jungle would be nice to see.
Since it looks like someday we might get randomly defined critters, how about an actual Ends of the Earth, where if you travel too far from the known world, you start reaching the edges of Chaos (Moorcock style), where reality starts breaking down, and entirely new types of creatures start showing up. As the world becomes more and more explored, Chaos could gradually be pushed back further and further.
Along with floating rocks, how about the occasional floating island? As in, an island in the air, that drifts on the wind (bonus points if there's a windmill).
For that matter, if you should find a way to get up there, I want clouds to be mineable somehow, for silver.
Cloud castles, with titans living in them.
And I want lightning. It's probably already in, but specifically, I want it to be possible for lightning to strike trees, occasionally strike aboveground buildings (doing damage, and setting wooden buildings on fire), and also strike the occasional critter. It would be great if this were tied to religion, like for instance, if your temple of the sky god was immune to lightning.
I'd also like to see vast herds of animals, like buffalo for example. It would be great if an enormous herd of animals could be led by animal-men, and maybe even have the ability to generate a collective "spirit of the herd".
When chopping down trees, I'd like it if you didn't just get "the log", but also got smaller pieces of wood (which could be used as a fuel source, sawdust, and for small projects), and maybe even a unit of leaves if you cut the tree down in summer.
I'd also like to see maple trees be tap-able, and bark as a harvestable item (cinnamon, willow bark for medicine, papery bark for writing, even pine bark-under the bark is an edible layer). Nothing that would kill the tree, unless you intentionally removed enough bark to, well, kill the tree.
I know it's been suggested before, but I think having a set of different shapes you could choose for the world would be a fun feature. Probably be a pain to code for, though.
I want meerschaum, and hunks of ambergris, to be found floating in the ocean.
http://en.wikipedia.org/wiki/Meerschaumhttp://en.wikipedia.org/wiki/AmbergrisElementals/Jinn/Kami that actually live in the land itself, as well as specific places having their own spirits/gods could be a lot of fun too.
Oh, and I want fossils to occasionally exist as features of the landscape. Like, you could find fossilized shells in one geological formation, while another involves a dinosaur skeleton stuck into the side of a cliff.
Actually, I had a story idea that didn't pan out, about a city that was built inside of the fossilized skeleton of a goddess (one of the gigantic, multi limbed/headed varieties), and trapped inside of her was her unborn son, an enormous Lovecraftian monster who couldn't leave his prison, except by possessing a part of the city, itself.
There was a sect in the city that was engraving on her bones the history of the city, but it wasn't complete (even though they were in the process of engraving it, themselves) because some of the bones had gone missing/been destroyed over the years, and they couldn't write the parts that had been meant for those specific bones.
I'd like to see something like that.
I also want the Plain of Jars
http://en.wikipedia.org/wiki/Plain_of_Jarsand I'll second any other suggestions of ancient monolithic structures/statues/menhirs/henges/the like.