Scale maps: Controlling the scale of .obj populations with a painted shader or image map. An even better version of this would allow you to also use the min-max scale function within the population's parameters. So your populations would still have a random scale, but also would allow you to control areas of smaller and larger scaled objects within the same population.

another thought (they keep coming :-) )a dedicated color adjust node (or addition to the existing) with RGB controls I know you can put something together with the Build HSV node but often times you just want to subtract a bit of red out of a stack of PFs for example...

I made one myself and it works ok:- just seems strange there isn't a built-in node that can do this kind of color correction (Attachment Link)

add "clamp black" and "clamp white" to blue nodes like add, subtract, multiply scalars etc. I know a separate node can be added (does adding lots of blue nodes add to calculation time?) but with lots of math blue node will help to clean up the node graph

one more (maybe not )add "clamp black" and "clamp white" to blue nodes like add, subtract, multiply scalars etc. I know a separate node can be added (does adding lots of blue nodes add to calculation time?) but with lots of math blue node will help to clean up the node graph