OK, so I think I'm finally going to get into DF modding. My plan was to make a mod to more accurately reflect medieval times (mostly..). For this, I plan on removing most fantasy elements. Different human civilizations will take the place of the various races. Races I plan on including: Generic European: Close to current humans, Desert Peoples: Akin to dark ages Muslim societies (their Golden Age), Noble Savages: Like DF elves but not so peaceful, Temple Builders: Akin to DF goblins, Far Eastern (need better name): In a word, China. Note that I'm not trying to be racist with any of these, it's just that certain stereotypes do lend themselves to a more interesting and diverse cast of civilizations.
On the economic side of things, I won't do much with metallurgy (not sure about keeping adamantine), but I will try to increase farming difficulty significantly. Hopefully, this will mean that players will have fields of farms to keep their cities fed. I will probably include farmable wood, because that can be a real pain otherwise.
The most fantastic element I plan on adding will be Monsters. These will represent the fabled creatures that lurked in the shadows of the wilderness by all accounts, and exist to make adventuring interesting. I will probably have them in small, auto-hostile civs. They will be generic (at least to start) for simplicity's sake. I intend to have multiple tiers of monsters: regular, horrid, fabled, and legendary. These tiers will increase in rarity and power (obviously). This may make megabeasts irrelevant, as hopefully the monsters will just siege instead.
I can't promise any degree of speed on it, as I am entirely new to modding, and school is a higher priority. However, I hope to keep you updated on my progress, if people are interested in it.
As an addendum, if any wonderful, wonderful tileset artists would care to contribute, I would love you.
Thanks for reading.