I had not thought to increase the scattering anisotrophy. I will see how that looks.    :)

As for the rest of the suggestions, i will have a go at these but still i have yet to see anyone doing clouds remotely like what Derrin1 was thinking, linked to and also something like the photo i posted. I tend to think that vue is just not capable of such high detail yet. The developers only went so far with clouds.