I don't know if I may tell the grass's secret, but it's not the variation, and it's not an inbuilt grass. They are two homegrown grasses, and the new feature is still alpha, but a great addition to the next update. You'll find out if you look carefully to the creeks edges
Nice update, Martin. I like the stones, but you encountered the same problem as I did when applying smoothing, namely that the creek bed changed in appearance (hence the ridge). The ridge is a cool extra indeed, but to the left there's a strange sharp shadow, which I do not like very much. It wouldn't be natural under flowing water, or it must have just been broken off. But I'll dive into the creek again (would be nice, wouldn't it
).
Anyway, this is my update, where I noticed another 'bug'. The edge of the render, be it a crop or total render (!), doesn't do the fine ridges I had under water. It's based on a get position, maybe that's the problem?