Show crop on image when hovering over crop aspect ratios dropdown

I know how I want the image to look but not exactly what crop ratio that is. Useful to see the crop displayed while hovering, before selecting which to apply. I know the crop position and zoom level may still need further adjustment.

Current workaround

At present I have to apply a crop, and if not right, I have to go back to the drop-down and select a different crop, maybe two or three times before getting what I want.