Your mission, should you choose to accept it, is to design a Tiger II analog that is lighter, more producable, and more economical for the Wehrmacht. Maneuverability does not need to be improved as a primary design goal, but bonus points for including it as secondary benefits. Alternatively you may downrate the engine to improve fuel economy and range. 20/20 hind sight is allowed for all avenues you choose to take. The constraints are: Must maintain the spirit of the Tiger II's design philosophy, specifically, assuming top quality on all materials, it must be immune to standard APCBC rounds from all enemy cannons on the glacis, turret, and mantlet, so minimum of 180mm effective thickness. Bonus points for increasing effective protection over OTL. Composite armors allows, if the Germans had reasonable designs in the works. Must use the 88mm L/71. Bonus points if you can keep the turret ring big enough to mount a 105mm L/68, or L/52 and a reliable APDS round along side it. Must carry 55 rounds of ammunition for the main gun, and 1200 spare rounds for the machine guns (on top of the 50 round belts loaded in each machine gun you give it) No lifting foreign designs directly. No direct copies of IS-2's or Centurions. Project for your heavy tank may start no earlier than 1939. Bonus points if you include a drawing, sketch, or rendering.