Well I guess again I don't want to open a bunch of UI's to edit everything. All the maps are plugged in there. If I want to do some small tweaking to each of those, I can just do it in the environment tab once I have set everything in the output of the maps/colors.... I can play around fast and return it back to 1 to go back to what I set in the maps outputs if needed.
I would not say at all that it looks cluttered or unnecessary, very useful in Vray for me. I do think Vrays looks less cluttered though. I was not proposing that layout but the concept. Why be so reluctant to little things like this? Is it to make Corona more streamlined? All this does is make less mouse clicks for me, and lets me iterate lighting and reflections faster. But to each their own.
Here is Vrays for comparison. Even though I am pretty sure everyone knows.
Edit: I guess I don't want them limited to 0 -1 that was just an example.