Just downloaded this extension and have started playing around with it. Anyways it reminded me of a questy ConfirmEdit extension dynamic question solution. (See: Extension:ConfirmEdit & http://thingelstad.com/updated-dynamic-questy-captchas/ ).
Anyways just a suggestion, but if this extension could plugin into the Questy ConfirmEdit extension in some easy way it would greatly add to the effectiveness of Questy questions. Not that you have the time to do this, etc, but it may be a worthwhile goal down the road. All the best to you.