I went with a short inner barrel that you can pull out. It also works for stand-alone grilling. Then there's NORCO's method of lifting the drum off the lid. Either of these methods seems more straightforward than making a slide-out tray but hey, I probably just don't understand your concept Bob.
Dr. Mark (STL)
Ph.D. (honorary) Bovine $hitology
A thin line separates paranoia from an acute understanding of reality.