I have a suggestion for the Scale (S) and Rotate ® tools:
Instead of the current “click to add origin and drag” method, the Scale tool would show and use the Bounding Box for transformations. Hovering the corners ( while holding option ) would show a rotate cursor, allowing rotation without the need of a separate Rotate tool. This approach would feel more native to the way illustrator and other design applications handle transformations.
Any thoughts?