I'd like to suggest a slight tweak/improvement (obviously not being a programmer I have no idea how easy/difficult this will be to achieve) with the distribution/Diversity clusters.
As it stands they currently produce a soft/sinuous/random arrangement which most of the time is just fine, but I've had several planting schemes that have been quite linear/regular in shape; would it be possible to make the diversity clusters do this? Perhaps with a different type of noise? Voronoi? Ideally I'd like a slider that goes from "curvy" to "linear"!