I would really like to see some more flexibility with the Flickr tags feed. At this point, it only seems to bring in photographs based on "Interestingness" (and, does this very well!). However, I would like the option of simply bringing in the most recent photographs of a given tag. And, perhaps the ability to track a single group and a single user.

Nonetheless, this is the best screen saver that I have used (and, I have used many over the years) ...