I'd really like the ability to export images with author-title, e.g. by-username-clouds.jpg
I want to be able to very easily maintain the author for attribution and retain the title of the work, but Flickr saves as a random string. If each image was saved/exported as by-username-title-of-work.jpg I'd have a whole lot of information maintained automatically. Flickr's not likely fix this, but you could certainly help, since you have the metadata. By the way, I'd pay for the service.
John LeMasney commented
extra points if the filename was configurable, e.g. I can choose to include username, title, size, license info, etc. Cheers.