Individually lock/unlock a layer's transform attributes

When rigging characters for animation, it'd be really helpful to be able to right-click and lock/unlock individual transform attributes in the Transform panel (e.g. positionX, positionY, scaleX, scaleY, rotate)! Maybe this could be extended to other keyable properties too, like constraint strengths etc.

This would help prevent an animator from accidentally keying parts of a rig that were never intended to be animated (since they would break the rig).