Well, yes and no. In the valley they look okay, but overall, they're not really needed, I think. So I should actually restrict to slope, but that gives problems is my experience. And the laterals take longer to render due to the compute normal. So now I will see if I can localize the compute normal calculation (not needed all over the globe anyway).
The clouds need to be kind of like this is the valley, racing towards you (so animated), but on the opposite side they are not up to par, IMO. Too harsh, I think. But for different shots, they might be changed separately.
Credits to the good old Lightning bushes, btw.