[Add Color or Hue as "Channel" for Layer Blend Ranges]

Blend ranges are both easy and powerful. I would like to see a way to make the blend ranges a function of color (or hue). I have attached two different mockups. Option 1—the one with the curve like how blend ranges work now—would probably need (1) an option to pin the leftmost and rightmost points together to easily enforce periodicity of the curve, and (2) a way to shift what color is in the center.

I used "color" in my mockups, but perhaps "hue" would have been a better choice.

 

[Add Saturation as a "Channel" for Layer Blend Ranges]

Using layer blend ranges is an easy and powerful way to accomplish luminosity masking. I have seen discussions on the forum for how to accomplish saturation (and vibrance) masking. I propose adding saturation as a "channel" in the layer blend ranges, which would be a lot easier. I mocked it up: