Ability to set dates for specific Gamification Items

Would like to see the ability to set specific dates for specific point-earning actions.  For example, many attendees add their profile photo prior to the event dates, and if the game is set to start during the event dates only, they will not be awarded those points.  However, I can understand wanting to hold off on awarding points for viewing content (videos, exhibitor materials) until the actual event dates to entice engagement over a certain set of dates.