When doing material tests it would be nice to have the option to use either the A or B channel straight with no calculations. Could be as simple as adding a “Straight A” and “Straight B” to the drop down list. This way we could keep the other channel still in place but tweak each individually in the renders.
That or redo VRayCompTex to emulate Max2009’s new Composite map, and have little “isolate” buttons or something.