Agreed. I've been using the successor of the Brazil renderer, Caustic, in 3ds max and while it was in alpha stage and it's capability was limited, it was a major pain to go back to the 'traditional' way of working. EVERYTHING is just so much faster to work on, shading, lighting, finding neat perspectives, spitting out fast previews etc...
It might seem like only an addition to the toolset for most people, but it'll eventually become the new standard of lookdev, shading and lighting. The sooner Corona gets it the better, even if it's in experimental stage.