I (obviously) don't know your business, but the fact that the clip art / images question is part of your standard operating procedure gives me the impression th

I (obviously) don't know your business, but the fact that the clip art / images question is part of your standard operating procedure gives me the impression that it would be used by quite a few of your customers. You may be right that it wouldn't improve sales numbers. As to the UX, I was under the (possibly mistaken) impression that in today's day and age, most users on the internet, technical or not, understand the filesystem metaphor just fine. They send photos and other files over email, facebook, and other media frequently.