How does one submit a suggestion to Turnitin developers for a new feature?  I'd like to suggest a "Quarantine" folder for papers that need revision, papers that were plagiarized on the first submission, etc.  This would preserve a record that the instructor or administrators could access.  As it is, in order for the student to submit a revision, the initial submission must be deleted.  That loses a potentially useful record of the first paper, including whatever problems there were with that version.  Is this feature possible for future development?