Yes, which is why I wanted to make a stable, democratic Germany, which would significantly decrease the chances of it showing such aggression as OTL. If the treaty could repair Franco-German relations than it could prevent war between them. I am unsure if that would be possible but the Proto EU would be the best chance of it, just as it helped OTL. And both nations pride must be allowed to remain intact to prevent revanchism like in 1871 and OTL interwar Germany.
The problem is, the Versailles treaty makers can't make a stable, democratic Germany. It is the Germans themselves who have the lions share of the power here. Yes, external events had some impact on German politics. But all have far less influence than how the people inside Germany choose to act and react. And as I have repeatedly noted, your alternate treaty does very little about the things that really had the German right riled up.
And the OTL EU was founded in very, very different circumstances to this German hegemony. After OTL's WW2, Germany had been bombed to rubble and then thoroughly looted, millions of her citizens had died and millions more were cordoned off in the Soviet zone. And WW2 was the complete humiliation of Anglo-American isolationism. After WW2, both countries kept troops on the continent and very quickly committed to a new and very long-term alliance and all of the victorious allies (even the Soviets, who didn't commit fully to this) gave up some of their sovereignty to international bodies like the UN, IMF, GATT etc.
I simply propose that a democratic Germany, one less resentful towards Poland, will be less likely to infringe on that sovereignty than the Russians. Poland would likely end up economically reliant on the Germans.
Unfortunately, anti-Polish racism is pretty strong in this era. And while Germany will resent Poland less, they have so much more power that the lesser resentment can still lead to much, much greater damage.
except the entente wouldn't be willing to invade for harsher terms. The Germans surrendered, and were willing to accept most anything the Entente through at them. Only France and Belgium were interested in a draconian treaty, the other powers wanted to maintain Germany as a counterbalance, and as such wouldn't support the French in any such push. The French could beat the Germans, but only if they had the will to, and I doubt the French soldiers would be interested in continuing the fight after believing the war to be over.
I don't think you understand how thoroughly Germany had been defeated... And how strong anti-German feeling was in 1919. If WW1 had re-started due to Germany rejecting the treaty, I am pretty sure the Entente would have been able to pause their demobilization programs long enough to flatten the German army.
The treaty is made with more foresight, with a modern understanding of how extremism rises.
Keep in mind, the dominant model for how extremism rises in this era was Napoleon, who followed a very different path to power to Hitler. If you want to beam knowledge of how Hitler rose to power into the brains of the treaty signers, you've posted this to the wrong part of the forum.
(Also, I don't think knowledge of Hitler's rise would have made the treaty-writers produce a treaty like the one you've posted - probably they'd come out with something much more like the post WW2 settlement, which is remembered as a merciful peace because of some very vigorous propaganda and the Cold War soon derailing the Allied plans for Germany.)
And, even with more foresight, the people writing this treaty are still the 1919 representatives of the 1919 victorious powers...
But the whole point of Alternate history is to tweak something in a way that didn't happen and often wouldn't happen.
If you ignore the context of the events or people you're changing, that's not alternate history. If you don't want to engage with the actual culture, personalities and politics of the Versailles conference or the culture and politics of Germany, what do we have to discuss?
fasquardon