Well in all of the above mentioned areas, I feel your clouds are much closer to real clouds in behavior. I love the way some of them tower far above the others, as is the case with real cumulous formations sometimes. While feeling thick and rolling in nature, they manage to feel light and whispy also. Also, their capture of "sunlight" on the different surfaces of each "cloudlet" is refreshing and lovely, while the shadows below or behind them felt much more natural than others.
I understand that the game has limitations, and that some things are a lot to ask, so I am NOT making a request, just pointing out how awesome it would be if someone were to develop a way to have a couple of more "layers" of slightly different clouds to be randomly generated or omitted above the standard clouds to form more complex cloud possibilities...
small example shown in portions 2:40-2:54 of the following video
and in the pics below:
For me, your clouds feel more like these clouds than any others I have used. I am just a fan is all really.