Have a second shape tool, or maybe an option in the current one, that works like the Microsoft word shape tool. Choose a shape from a predefined, yet extensive, list. Be able to choose outline and fill color (including clear), and maybe even opacity. Once it's placed on the page allow scalability of the whole shape, rotations, and even adjusting points on the shape to make warped shapes. Included here should be arrows, a line, and a dotted line.