We've considered doing something like this. It would be nice. If we're to do it though, we'll probably just create a way that any question could be mapped to any other question, meaning all questions can be mapped to all other questions on a different version of the exam. That get's complicated when you get up to 100 questions. One of the factors preventing us from doing it is the complication that would be involved in that from a user experience. We'll discuss and if a lot of people request this feature, we'll certainly consider making it happen.