Ticket's start date

Hi I'm sure most people conscientiously create their tickets on the day of the actual event. That isn't however my case. I'm often in the road, or running like some headless chicken, 'putting out fires' as I hop from site to site. Ticket creation comes later: end of day if not on weekends. So it's important for me to be able to set the ticket's actual start date to something other than 'today'. Is this possible ? Or will this be possible anytime soon ? Thanks Yann