How to control precisely easing values of Scale/Rotation etc.

[tyFlow]

For Scale, you can set keyframes on the scale spinners and adjust the curves like you would any other curve in the Graph Editor. Then set mode to absolute and timing to continuous, and set the keyframes rollout mode to whatever suits your purposes. Same principle applies to the Rotation operator. Using that method you can get exact control over how things scale/rotate, using animation curves.