I didn't see any options for clouds, and would like to see some.
I like maps that have moving clouds; makes the environment feel more alive.
Have options to enable clouds, and then set the color of 3 different cloud textures at different heights. Cloud 1 is extremely low, useful for creating stormy effects. Cloud 2 is medium height, for normal cloudiness. And Cloud 3 would be pretty high up, for thick overcast skies. When selecting the color for a cloud one can adjust alpha to render the cloud invisible. Or each cloud layer have it's own check box.
Clouds (O)
Cloud 1 Color [//////]
Cloud 2 Color [//////]
Cloud 3 Color [//////]
Cloud Speed ----|--