Proof Sheet or Queue of Renders showing ranges on sliders

I would be great to set up a queue of “renders” with ranges of values of sliders and let it run overnight or for an hour or however long it takes to get a better feel for how the many variables affect the image. It’s hard to find the “Secret recipe” that works just right for a particular image, id rather let the computer crank away and save a bunch of files I can then sort through later to get a better feel of which knobs really need turning. Perhaps some sort of API would be nice as well?