The nice thing about Procreate is you can add texture with a brush. It feels fluid. It will be nice if illustrator. iPad had a feature similar to the brushes Procreate use. So you can easily add in textures within masks or over your design. This will also be a useful integrated feature and unique for iPad so you can create designs on the Mac and then have the ease of using your Apple Pencil to colour in texture. Bridging the gap between illustrator desktop and iPad.