I would also like to see this functionality.
Especially being able to allow users to crop images.
It would be nice to be able to set what cropping controls are available to the user for example to limit the crop to a particular aspect ratio like 1:1.
I currently use the GravityWiz plugin File Upload Pro to make users of my directory site crop their uploaded profile images to a 1:1 ratio.
I would love to be able to ditch Gravity Forms and GravityWiz and use CubeWP Frontend Pro instead!