The autoupdate feature is pretty cool if you take advantage of it. I'd really like some more control with it though so I could put updated advertising or announcements at the beginning of the image sequence so it's more likely the user would see it.
It'd be nice if you could specify for each image in the xml file its position in the image sequence, how long it should display, and if it should display once or many times. Also, whether it should replace a specific image (like the title image) or be inserted into the sequence.
Another cool feature that I'd like to see is the capability to change the global image captions across the whole screensaver, or add a new caption across the whole sequence.
Ed