Just some ideas for new maps, most are splits of already (but, in my opinion, poorly) represented regions.
Mexico/Central America/Panama-Colombia:
- Lake Texcoco/Tenochtitlan
- Oaxaca
- Rio Bravo/Rio Grande
- Guatemala
- Chocó-Darién (Thank you Moozilla for the suggestion)
- Lesser Antilles
- Maybe Honduras as well?
South America (mostly Brazil since that’s what I know better):
- Amazon split (the current map could be renamed to Amazon River or to Manaus)
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- Rio Branco, could also be called Acre)
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- If they go with the Acre name, the name Rio Branco could go to a map based on this river
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- Amazon Delta/Marajó
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- Caquetá-Ja[]purá (could be two maps, one called Caquetá and the other called Ja[]purá
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- Tocantins
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- Alternatively, Banan[]l Island
- Atacama
- Cerrado (could be represented by at least two maps)
- Caatinga (could be represented by at least two maps)
- Buenos Aires (the province, not the city lol)
- Tierra del Fogo
- Chubut
- Cuyo
- Pantanal
- Paranoá (based on the region of the modern Federal District
Asia
- Sakhalin (could be represented by at least two maps)
- Mesopotamia
- Deccan split (I’d go with at least three of these, while keeping the current one):
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- Depending on which are used the current map could keep its name.
- Hainan
- Xinjiang
- Sichuan
- Yunnan
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Heilongjiang
Kazakhstan (maybe divided by regions?) - Kyushu
- Shik[]oku
- Altai Mountains (could also be called just “Altai”)
Asia/Europe
- Ural Mountains (I think that one might already be in the loading screen maps)
- Caspian Sea
- Sea of Marmara
The list ended up bigger than I expected.
Edit: had to edit because two words got censored
Edit 2: added a few more suggestions
Edit 3: more suggestions