Fedor von Bock, Guderian and almost all of the German generals involved in Operation Barbarossa vehemently argued in favor of continuing the all-out drive toward Moscow. Besides the psychological importance of capturing the enemy's capital, Moscow was a major center of arms production and the center of the Soviet communications and transportation system.
The only one who wanted Kiev encircled was Hitler.
I would ask what would have compelled the Soviets to surrender to an enemy intent on their enslavement and annihilation after their capital had been taken, when they still had a fresh army and significant industrial potential in Siberia?
I would also ask what would have prevented those soviet troops in the Ukraine from pushing north and cutting a drive on Moscow's supply lines?
I'd take the views of the German general staff, and the views of almost all professional historians, over the views of an Austrian corporal and some random Wermacht fanboys on the internet.
The chief proponent of the drive on Moscow was Gudarian... who was a fairly enthusiastic commander, but didn't know when to stop, and had a very bad habit of letting his armor get way too far ahead of his infantry even before combined arms doctrine (on both sides) put an end to the type of slashing armored thrusts he was so fond of.
Sure, they captured a lot of soldiers at Kiev..but there were a lot more in the USSR's manpower reserve. When fighting a Hydra, it doesn't matter how many heads you chop off, you have to stab it in the heart.
I just don't see how Moscow would end Soviet resistance. It would be an important victory to be sure, and would certainly complicate logistics for everything north and west of Moscow, but a war of annihilation isn't over until everything is conquered. German armies fought (and attempted to fight) their way out of encirclement by Soviet troops at the end of WWII in order to make it to Allied lines, and that was when almost all of Germany was occupied. I don't see why the Soviets would give in with industry still in Siberia and significant armies still in the field. Especially at a time when the Germans have almost nothing left (this is where the lack of follow on forces for Barbarossa really screwed the entire plan over, no matter what they did operationally).
The game inadequately models the logistical difficulties of fighting in Russia and Russia's manpower advantages. As it is these factors kick in only when Germany has reached the Urals - the game needs to be tweaked so that these things make an impact earlier.
Agreed. European Russia was a seemingly limitless war for the Germans... it should seem that way when I am playing Germany. At the very least, as was said above, ESE needs to have more of an effect on supply reaching my troops.