i am very happy with ED working on the new clouds, a wish of mine is that they'd look whiter(to borrow a little less color from the atmosphere's color, from the light's color). The second thing i'd like to see is some more defined shapes, because now they look too milky and fluffy and to have more complex compositions, like in the next photos:
http://www.dispatchhomeandgardenshow.com/wp-content/uploads/2015/02/clouds.jpg - here you can se the contour is strong so the overall shape is more defined
https://tctechcrunch2011.files.wordpress.com/2012/04/clouds.jpg - here too, the comsposition is very complex and their white although is colored blueish from the atmosphere's light, you can tell that they are white. One more thing, and most important, i'd like to have no grey in their color palette, i'd like the grey would dissapear. In the shady areas i'd like to see colored greys at most, but more color than greys.
I hope this opinion of mine would help the team in getting more realistic clouds.