iPad photoshop brush settings

the ability to create, edit, and organize brushes is completely missing from the iPad version of photoshop. The pencil tool is entirely missing as well which I use more than the brush tool for clean line art, and is also necessary for any kind of pixel art. These tools are basic essentials included in every other digital painting app. why would they be left out in the iPad version when the best use case for iPad photoshop is for digital painting?