Cycles Light mix

Cycles is amazing renderer and pretty capable of doing pretty much anything So I tried to make an approach that does the same light mix effect in maxwell render and corona by overlaying final images above each other using add nodes and it worked pretty nice as you can see in this video here

youtube.com/watch

but I actually see doing this to work only with specific render layers may speed up the process way too much and give us the ability to change color of lighting in post with compositor , as in this video I literally grabbed each lighting condition and rendered it as a complete image , which I guess it is not convenient to render the image for 5 controllers for example 5 times ! I may think that we can add an option in view layer to have specific lighting sources to be rendered like a list or so , I guess this is way too close to apply