Symbols, Symbol sprayer, sizer, and other symbol tools
Symbols in general are very useful, but especially the symbol tools could benefit from the Apple Pencil greatly, helping in making things such as starry skies or simple textures quickly, easily, and with the precise paths and shapes one may want for those textures or stars. It would also make the iPad illustration process a bit more procedural while remaining intuitive.
This way the ipad illustrator will be one step closer to being as accessible as the computer version.
Add functionality for symbol library like in desktop Illusrator