+1 although I think it's better as a premium-only feature, something like the mass image uploader, which is also premium-exclusive.
Something that I noticed while linking one of my friend OC's to images featuring both of our characters after they finally added theirs to their toyhouse is that there's no way to mass add a character to images. Which means I had to open, add a slot to, switch over to 'Select from Other User's Characters', then find the character profile for 180+ images. The process doesn't seem like a lot until you have to do it more than a hundred times. I don't think this is a super pressing issue, or that it's make or break for the site, but it's something I'd definitely like to see implemented.