I do not think more gears in a RAM/Cummins will change towing performance very much. What it could provide is truck that can perform equally as a towing monster and a freeway cruise. My 2015 with Aisin and 3.42 gears was a freeway cruiser, that towed at 24,500 lbs combined just fine. As it is now, if one wants really heavy duty towing you go for 4.10 gears. So with more gears you could have your cake and eat too. What occurs on the IKE will not change that much, and I6 is just what it is, a quarter horse not a race horse.
