Relative previous conversion
There is an apply previous conversion option in Bridge, but what about a relative previous conversion option? For example, you've color corrected 1,000 images. Some were color corrected at night, so naturally those images are a little bit off. You could use the copy and paste settings to only select color balance, but then you notice that by going cooler on the color balance, the images need a little bit brighter exposure. This has to be done manually for each image as every image is a little bit different when it comes to exposure, especially if you're shooting with flash or aperture priority. If there were a relative previous conversion, you could do this in all one step. Make changes to the first image, apply the relative previous conversion, and it adjusts by the amount of change you made to the previous image. You adjust the color balance by -0.5 and exposure by +0.2. This relative change is applied to all the images you select and apply it to. This is also perfect for when you have edited all your images and you decide you just want everything a little more warm, or a little more cool, or a little darker, etc. I've been wanting this for years and I'm sure others have too.