As for my opinion of this scenario, I think Germany would have evolved into an effective society. The biggest challenge facing post war Germany would have been the death of Hitler and the transfer of power. This probably would have resulted in a power struggle. If a Hitler-esque man assumed control of the German Empire, 5 years of civil and economic unrest would have occurred, followed by a coup conducted by moderate minded men.
Either way the conquered countries would integrate into the Pan-German mindset, with Germany being the official language and other languages gradually falling into disuse. America would resume trade relations with Germany to help contain Soviet expansion into the Middle East and Africa. With the lack of trade barriers the standard of living would rise, and as it rose insurgency movements would lose the power to recruit and raise supplies. Through the 1930’s and into the beginning of the War Years, Hitler and the Nazi’s made serious efforts to improve the lot of the common German and respected the environment (as much as any nation at the time). This would have continued.

The level of technology would be at a comparable level. Even under the repressive Nazi regime, German scientists achieved great breakthroughs. Innovation was a corner stone of Nazi success, and I believe it would have continued to fund research into technological advancements.

Restrictions on the press would have continued, and development in the arts would have lagged in Germany. Influences from America would have affect Germany artists, but there would be no Nena and no 99 Luftballons.

For the naysayers who believe this scenario to be impossible, I say Germany could have won the war. Had Japan not attacked Pearl Harbor in 1941 the US would not have entered the war in earnest for until after November 1942 at the earliest, more probably November 1944 (think about national elections). The US would have continued aid to England, but would have been significantly less than the massive amounts of armorment, food, fuel, and other supplies that began arriving in England in early 1942. The German U-boats would have been effective for a longer time, and might have closed the Atlantic. Without the supplies the counter offensives of 1943 wouldn’t have happened and Germany would have had the time and resources to bleed the Soviets dry.
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It is impossible to imagine this scenario, because the Third Reich was like the Energizer Bunny losing its batteries. It started out strong and patriotic, but as usual, business practices prevail. There simply was not enough money or manpower to keep things going. Just imagine the trouble of fighting a war on many sides… it is like a business trying to expand into impossible markets.

Hitler was a very charismatic and hopeful figure for many German people, but… he had limited resources. Think of him trying to get into Russia- he had no idea how difficult it was to
fight a war in an area with such challenging weather. Sure, there is snow in Germany… but snow in Russia??? Another situation completely. The equipment could not get through… the soldiers suffered. Kind of like when the British tried to fight against the American colonists without knowing the territory. A losing battle.

As for Germany itself, all the patriotism in the world would not hold up a starving country with unimaginable inflation and a seriously devalued currency. This would have been the situation in "Nazi" Europe. No, the Nazi Empire could not have survived, since it did not have the food, money nor resources to restructure.
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Even though the Nazis and their doctrine destroyed Germany to rubble and killed some 60 million perhaps there are some deceived enough to attempt to repeat it in 2007.

Your question may be less abstract or theoretical than we wish to believe.
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It’s fairly good.
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