Provide the ability to set the default output and compression rather than defaulting to .png and asking for the compression when .jpg is selected. Currently this requires a selection of .jpg and a specification of the compression ratio every time.
Enhance the save to automatically increment the number rather than asking to overwrite the previous saved file, i.e. Photo_1, Photo_2, Photo_3 etc.
Combining these would simplify normal saving and make it quick and easy to save multiple attempts when refining a photo.