It would be helpful to be able to see the file name of the current image while adding registration points. (refer attached image as an example) This would make it easier to scroll though looking for images of the same location as you can then just go by the file names, especially for sites where there is not obvious features to go by in the images. I find I quite often have to go out (click choose a different image) to check the file name and then go back into the image.