Min and Max scale is great for naturalizing pops, but it would be awesome if we could have a scale function to further influence this. For example with color alterations we could create different grass colour in depressions, and even change the scale in these depressions, all without adding more pops. Creating dead or dying grass where water fills areas in like a swamp for example.
Another example would be constricting the height of trees on a steep hill compared to free growing in deeper soils.