The oil painting look is lovely.

There's this button on the right side of the screen.

This may do, for now. I'm hesitant to add too many features until I have a better idea of what's happening in different parts of the world (though a lot of that would be too granular to appear on a map of this size, and I can always continue to iterate this map as things develop).

Agreed! Thank you for the suggestion. And once I add more vegetation and other features, there won't be so many large stretches of the grass.

Widened the edge fade on most of the terrains -- considerably wider on the grassy ones, less so on some of the others.

Starting to add more forests and farmland. Also need to add more natural features like volcanos and cliffs.