Its hard to unnderstate the necessity of buying a good lightroom book to see what the experts do. We all have varying degrees of experience as well as a tolerance for imperfections.
I tend to often shoot dark theater scenes at high ISO's, so I adjust a image at the various high ISO settings and let LR duplicate those adjustments for that ISO and body.
I often take a lot of images that are almost identical as actors move slightly, or in a attempt to capture a expression or movement. I adjust one of the series and then clone the others to have the same settings.
If you want corrections to be made automatically, try DXO. I don't use it, but I've tried it, and it does a excellent job of developing images, and determinimg how much nr, brightness, vibrance, contrast, ect so you get a good image with very little or no effort. It does not have the advanced tools that LR does, so you might still want to use photoshop to touch up some images. DXO also does not organize images, and creates sidecars which I hate, since they seem to get lost or are not always moved when I move the files.