... have easy access to important features with gestures that feel natural. For example, even though the "color picker" tool is there, you can pretty much pick colors just by dragging from the color selector to the artboard. Switching between two tools every time? Eraser then brushes, then eraser, then brush, then eraser. Don't think doing that without a keyboard will be hard. Every change goes through the memento system, and you can undo everything. It works seamlessly for batch operations.