"Back in the Day" - Frankfurt - there used to be a procedure for calculating TOLD data from intersections in the dep planning checklist. That was when SDPs and Jepps info first made it's way on the scene. Then it disappeared. It was explained to me that they eliminated it because every time we did an intersection takeoff using the SDP we invalidated it because we rotated later on the runway than the SDPs calculated for a given wt and temp. Of course noise abatement at EDDF was brutal so an intersection takeoff would lower our alt passing the sensors.