I just thought of an idea: Texture Packs in SuperTux. They can be distributed as normal add-ons, but only images files are added/changed instead of levels/worlds. I realised this possibility when I saw that the "addon reader" reads images, so new images can be added via addon formats? The game already basically supports texture packs so why not?
Texture Packs can have different themes, like grayscale, hyperrealistic, 8-bit, etc. and they would encourage so much new creativity.
The only thing the devs would have to do is add a section in the addons manager for texture packs.
What do you guys think? Would texture packs be a good idea? If you could, would you make one? Would you like them?