I suggest to treat to saving images in the same way as saving files.
Pictures are files, too.
People who save pictures a lot know how annoying it's to have to click unnecessary buttons during this. Try to save twenty images at row to feel this user pain. 🙂 And sometimes those twenty images may have exact same file name.
There are special extensions to fix this behavior. I use macros for this simple operation. Hopefully this will change some day.
Thanks.