Would it be possible to burn EXIF data to saved renders? I just tried to recreate correct "mood" of an image made few weeks ago (in a scene that had multiple cameras and few camera corrections modifiers missing because of my negligence ;-)) , that had multiple corrections done in framebuffer. I managed to do it by simply "eyeballing" the image. However it would be a lot easier if render had some basic info burnt in it - exposure correction, white balance, etc.
Another nice thing would be the possibility to read this information from previously rendered file and load it into framebuffer or camera correction modifier