I am working on presets for cloud types and you can mix these presets at once or interpolate them during time, all at runtime.
The focus on this product is to be easy to use and since it is a Marketplace asset, it will give access to everyone to the source code without anyone needing to pay more for this, so basically a good option for studios of all sizes. The videos show the asset tweaked for game mode, the film mode will be even more realistic, but we will release the film mode later.