In other CMS platforms, the user has the ability to scroll through their image directory, so if you need an image again or on another page in the site, you can just reference it just like we already have the ability to do with files. Currently, as far as I can tell, the only way to reference a previously used image is to find it on the site and use the URL or to upload it again. Especially with photos, it would be nice not to have to keep the original files on a hard drive once they've been uploaded to the site. I've had a few times where i had to search through blog histories to find a file I needed a year later. If the image directory was easily available, I could have just selected the file from a list.