Maybe returnig all along is not a good choice but some kind of resource penalty is needed. Also old okw had much more depth than new one with repair truck and strong lategame.
Revert back the changes made to king tiger's armor and fuel cost and remove the restriction of "only one on the field" as it is a stock unit and Jagdtiger is a call-in. Give jagdtiger the power it had before of shooting through walls and reduce the price of volks to 235. Reduce the price of a panther and give back the elitism to obers and falls. Give suppression ability back to LEIG. If all of this is done, then go ahead and give resource penalty otherwise stop being bias.