It will be helpful to have an option in the menus to chose whether you edit the file name from the beginning or end when you click on a image/file name to rename it. Or even better, to have an option where if you click on the left side of the filename you edit it from the beginning and if you click on the right side you edit it from the end.
Will be very helpful when it is needed to edit 2-3 images' sequence number.
Current workaround
Advancing from the beginning to the end with the right arrow on a keyboard.