Ability to use individual alphas per brush channel
I have a situation where I want to have a set height value, apply an alpha, and stamp it onto the model, but at the same time also stamp a flat color in exactly the same place with its own (different) alpha.
The way I've seen brushes work until now has been that you can only have one alpha for the entire brush, and if you want to do anything more than that, you actually have to custom-build input images for each channel to give the correct values, thus not letting me set a value just using the height slider or colour picker within SP.
The attached image might help this make more sense.
This would be an amazing feature!