There are some cases in which the text has both the same content and position across multiple images. Examples include logos of comic series:
pool #21307
pool #27264
pool #28444
and comics with reused panels:
post #6773827 and children
Currently, it is only possible to copy all of the notes at once. Any extras would then need to be deleted afterward. If you only want to copy one or a few notes, having a feature to copy single notes would be very beneficial. You could just put in the post number without having to worry about positioning, and you won't have to remove any extra notes. I think adding an extra button to the note creation interface in Translation Mode would be a good way to accomplish this.