Odd as it may sound,Poland might have been better off as a reluctant ally of the Germans,ala Italy,than being savaged by two socialist dictators; armies.Some writers of speculative fiction have made money with this idea.
Hitler was apparently certain that Russia must be attacked and much aggravated by Poland being an obstacle. What if Poland had granted unrestricted access to the eastern border via a defined corridor ? The Communist regime and Red Army were certainly no friends of Poland.
The question is would Hitler and the Nazis have tried the mass murder of the Jews in Poland if the German Army was committed in the Russian Front AND the Polish Army still existed?
Also would the West have declared war if the conflict was Germany versus Russia ? I ‘d doubt the British or French administrations would have,based on their reluctance to confront Hitler up to then.Was there any treaty obligating support of Russia by the West?
A better example would have been their Slavic neighbors, Slovakia. Hitler made Slovakia a puppet state, when Czechoslovakia was broken up, and appointed a Catholic, Josef Tiso as the leader. As a result, for the most part, Slovaks were treated much better than the Poles by the Germans, although they were considered untermenschen Slavs.
One of the interesting things, was that Hitler ordered an honor guard around Pilsudski's grave when the Nazis invaded in 1939....which leads to the question, what if Pilsudski was still leading Poland in 1939?
Another theory was that the Nazis, according to their racial theories, feared Poles, because they thought that while they were Slavs, many of them also possessed German blood, which would make them tough fighters, and would continuously be a threat to the Reich, if they weren't eliminated. This would explain why Poles were especially singled out amongst the Slavic peoples. Which would also explain why the Nazis would never have considered using Poles as guards in the death camps, as opposed to Ukrainians, knowing that if they gave a Pole a rifle, they would immediately use it on the Germans.
That was impossible. to the Germans poland HAD to be wiped out. There was no other place for Liebensraum. And the memory of Grunwald 1410 was to be wiped out.
The Poles were the Slavs who resisted the Germanic influence. The Czechs tried, but were defeated. The Poles stayed out of the Empire
There was no way out, Poland's Calvary was set, there was no alternative.
the Nazis would have mass-murdered the Jews no matter what -- Himmler actually took SS units out of the front-lines to commit these murders.