Just a few ideas...
1. Ability to generate list of unique registration codes in serial, all able to unlock screen saver
2. Registration key generator, copy button copies both name and key to clipboard. Currently only copies key.
3. Ability to turn image compression on and off
4. Ability to generate drop shadow behind images
5. Support for PNG alpha channel transparency
6. Ability to display news ticker or RSS feed during saver display.
7. Support for sprite based-collision animation.