WISH: Lighting Preivew for Cycles



I’m not sure if this is possible… but,
If there was way to see the output of all lighting including HDRI,Sunlight, self illuminated, etc… as sort of a Preview that would be nice…

Currently as the rendering samples increases the brightness of the overall render becomes more clear.
But, at the start of the render sampling, the scene is dark(and sometimes that is what was expected)

If there was perhaps a quick way to toggle a reduced bounces/causastics, etc… so only lighting preview and basic material to the objects are shown it would be nice to see before letting it sample all the way through.(to avoid white washed renders)
(doesn’t have to be perfecty accurate but emulating it)