I often schedule marketing emails and SMS blasts to go out over several weeks at a time. But when I need to schedule an impromptu or last-minute marketing blast, I have to scroll back through all the ones already scheduled and try to make sure I don't already have something else scheduled to go out on the same day or at the same time. It would be so much nicer to have them organized by the date they are scheduled to be delivered, instead of the day the campaign was created.