Probably never happen due to the E450 on backside of it's career. But it would be very cool if they offered a motorhome spec E450 cutaway with spring, roll bar, shock, and alignment calibrations for a top/rear heavy vehicle in typical motorhome weight range.
On mine the offset bushings needed to be replaced off the bat.
Oh well, what an adventure it has been improving the handling. Interesting I guess, but so many of the issues were simply calibration-and not anything to do with cost of the factory parts.