Hmm, what an interesting discussion.
He is right about the clouds Winny; scientifically mostly all clouds will form with some type of flat-cloud-base for reasons I outlined in an earlier discussion topic. This seems to be missing at the moment from SoW.
However, Redwan, although FSX uses a 'type' of 3-d cloud system, they use 2-d textures. Consequently, the whole cloud is covered by this one texture. Consequently, as you move, so does the texture, meaning that the whole cloud looks the same from basically every angle. Consequently, FSK is not as advanced as one might think
SoW is going to be completely different and far more complicated. Conversely though, a model change doesn't sound that hard, as all that's needed is for SoW's clouds to have flat-bottom and more defined shadows