To make uploading of images easier, how about a drag and drop app. Either as a webpage or a separate program. If it just uploads to the Inbox, I would be happy. But if it could do other things, like add keywords/comments/titles, upload to specific galleries or make a new gallery, I would be thrilled.
I hate to sound like a traitor, but after getting an account at *another site*, I certainly see the benefit to the users for such an application.
*edit*
I just seen that someone has written a MAC upload app, PBase Plug-in for Aperture. We need one for Windows .... pretty please.