Perhaps if Hitler didn't delay Barbarossa,
The delay into June was necessary because the Spring 1941
Raputitsa was a long one. An offensive which goes off in May 1941 would have immediately bogged down in mud and lost all surprise by the time it dried up and movement could be restored to the battlefield.
focused on taking Leningrad then Moscow rather than mass splitting his armies between multiple targets at the first time,
Had the Germans tried to concentrate most of their forces on the northern axis instead of advancing on three separate ones... they would have failed even worse. As Martin Van Crevald notes in his chapter on Barbarossa's logistics from Supplying War:
Page 176 said:
The difficulties experienced in building up a base for the attack on Moscow also rule out another suggestions that is sometimes made, namely that Hitler, instead of dissipating his forces in simultaneous offensives along three divergent axes, ought to have concentrated them for a single attack against Moscow. The logistic situation ruled out such a solution, however, for the few roads and railroads available would have have allowed such a force to be supplied. Even as it was, the concentration of seventy divisions for the attack early in October gave rise to very great difficulties, especially with the railways and the supply of fuel. It would have been utterly impossible to construct an adequate forward base for a force twice that size.
A similar metric applies to Leningrad. Additionally, ignoring Ukraine means ignoring a positively massive portion of both the pre-war Red Army and the Soviet resource-industrial base while giving AGC an enormous southern flank ripe for a counter-offensive while simultaneously allowing the Soviets to concentrate their freshly raised reserve armies in fewer places on the defense instead of having to deploy them all over the place to replace the constantly changing losses.
allowed his generals to temporarily tactically cede land to the Soviets,
Would have led to a catastrophic rout with freezing German soldiers cut down in the open.
properly clothed all of their soldiers for the winter,
Logistically impossible. The Germans had the winter equipment all stockpiled in . The problem was they didn't even have enough train space
and trucks to get it out to the troops without catastrophically reducing the shipments of ammunition and fuel.
and didn't open up a true two-front war with the declaration of war against the United States,
US declares war anywhere between a couple of weeks to a few months later, depending. At the very minimum, the US ambassador meets with Hitler:
"There is no way for the USN to determine if a submerged submarine is German or Japanese, so a complete exclusion zone around U.S. flagged convoys has been announced. The U.S. will, of course, refrain from attacking any German submarine, provided it does not attack an American flagged vessel, once it surfaces and identifies itself since the U.S. has 'friendly' relations with the 3rd Reich."
"The U.S. can not, of course, give any assurances regarding RN or RCN vessels in the same convoy. The U.S. can also not take for granted that any
submerged submarine is actually a KM boat, an IJN submarine might be lurking in the area, just awaiting the opportunity to attack. The Japanese have already clearly demonstrated their villainy and a surprisingly wide reach, so prudence is the only acceptable course. So once it identifies itself any U-Boat is free to conduct attacks,
on the surface, provided no U.S. vessels are targeted. Many of those U.S. vessels are, of course, carrying war supplies and/or troops to the UK. The British are our allies against Japan, and providing them with war supplies and sending troops to train with the more experience British forces, all for use against Japan of course, is to be expected."
"Of course we understand your concerns, Herr Hitler, but we have the 'strongest' of assurance from the British that the materials will only be used against Japan."
And with that, Hitler either abandons any attempt to fight Britain (which is a political impossibility given how determined the British are to fight him) or declares war on the United States.