Github for designers

I had a random thought for a site idea today: A public version control system for designers. I come from a design background and I don't know any designers who version control their assets, like PSDs, Illustrator files, InDesign, etc. Sites like Github are designed for apps, so the presentation layer is optimized for lists of files. From a designer's perspective, seeing thumbnails would be more appropriate. Does a site like this exist? As a designer, would you want a system in place for handling versioning of your design assets? Personally, I think it's very important and it should be part of any designer's toolbox. It could be as simple as building something on top of Github, just with a different presentation layer. Shortcomings: - No cherry-picking changes. Each commit is a new instance. - Adobe stuff is integral for designers, but is limited in what data can be extracted.