Grey out inactive gizmo options

Some types of objects do not have the same transformations available depending upon if you are in object or edit view. A good example is a metaball. In object mode the scale gizmo works with every transformation. But in edit mode a metaball cannot be scaled along any independent axis. It would be nice if the gizmo greyed out the transformations that aren't allowed. As I sometimes inadvertently slip between object and edit mode, and don't notice that the mode dropdown has changed, this would give a good secondary notification to the user that their editing mode changed.