I think a nice new feature would be a built-in image crop field. We currently use the Advanced Custom Fields: Image Aspect Ratio Crop Field plugin but it would be nice to have this as a built-in native feature. Either as a new field or added functionality to the existing image field. We use the PRO version so even if it is just added there we could still use it.
Please submit feature requests by contacting the developers or creating a ticket in your account.