What if Hitler did not have his men rest on the outskirts of Leningrad and instead forced a charge into the city? Would the Soviets be able to hold it? If not, how would that affect the Eastern Front? I think the Germans would have been able to take the city. Then Hitler, as he would have taken his Northern objective, would have been able to divert men and panzers to more needed areas like Moscow and Ukraine, maybe even send a few more units West.