Well, it's true that the Nazis wanted to create some kind of European Union (and indeed many Nazis like Goebbels envisioned Europe to be unified by the year 2000), but you seem to think that Hitler was a race-crazy warmongerer who would never stop and would conquer practically all of Europe and lead it from Berlin.
Hitler wanted to conquer the world for the "Aryan race" and commit genocide against the "subhumans". This has been proven time and time again by various historians of merit such as Weinberg, Hillgruber, Fest etc. Hitler's ultimate goal was to wage a total war for world hegemony against the USA after the war in Europe had been finished.
It's a completely unrealistic option for the Germans to colonize everything you say was planned to be annexed. Already with the East alone the Germans had centuries of Germanization and pacification to do to make the region a core part of Greater Germany. They simply didn't have the resources to maintain control over all of Europe without giving the local people more self-governance. This was already done during the war in Russia and the Balkans.
Of course it's megalomanical, but it is what the Nazis intended to do. You can't dispute that. The documentation is clear on this issue.
Self-governance was given as a last ditch effort to recruit manpower when the war had already been lost.
I don't claim Speer's memoirs are fiction. The book claims that Hitler said that the new Berlin will be called the world capital "Germania" (Welthaupstadt Germania), and THAT is total fiction. Hitler never said such a thing.
"I really believe that by re-naming Berlin the capital of our Reich "Germania", we would give very considerable impetus to the movement. The name Germania for the capital of the Reich in its new representative form would be very appropriate, for it would give to every member of the German community, however far away from the capital he may be, a feeling of unity and closer membership. There would be no technical difficulty about re-naming Berlin, as we can see from the Germanisation of Gdynia into Gotenhafen and the changing of the name of Lodz into Litzmannstadt." Hitler,
Tischgespräche
"Berlin wird als Welthauptstadt nur mit dem alten Ägypten, Babylon oder Rom vergleichbar sein! Was ist London, was ist Paris dagegen!" Hitler,
Monologe im Führerhauptquartier
I'm sorry, but you're wrong
Really? Funny how in the quote you left out the bit where I gave a clear example of how countless book-making historians have made huge errors on something as simple as political borders. Professional historians too are just people and they make tons of errors.
Historiography of the academic level doesn't have such errors. There is a difference between books intended for the average reader and material for the academic world.
Again, you seem to think that Hitler was a warmonger with no end to his conquests. Amusingly enough, and I have to mention this since we're talking about his plans now, he planned to retire to his hometown of Linz in the late 1940s or early 1950s, where he would devote the rest of his life with artistic pursuits. Kind of doesn't fit in with your views now does it?
He planned to retire after the war had reached a victorious conclusion. I don't see your point.