Smush and restore for each thumbnail sepparately


please can you add this feature to WP Smush PRO?

Smush (or restore from .bak.jpg) just one thumbnails - for example image-125x125.jpg

It will be very usefull because of plugins like Crop-Thumbnails - - where you can edit every thumbnail image to better fit its size. But for now when I crop one thumbnail, smush (with backup option activated) and later I want to crop another thumbnail of the same image, I have to restore all thumbnails and I lost that work.

It could be awasome.