Grow/Shrink brush for new hair curves system should have a maximum length as well as a minimum length

I'm playing with the brushes for grooming and sculpting the new hair curves system (Blender's replacement for particle hair) and would like to have a tool that I can use to set a patch of hair to an even length (like cat fur, or a closely trimmed beard).

The Grow/shrink tool almost does this with it's Minimum Length option, but this relies on you overgrowing the hair first.

It would be useful to add a Maximum Growth length option to limit the amount of growth as well. That way I could just draw over a region and have all the hairs in that area match my target height.