Well then in a Nazi State where Lebensraum was not an issue, you might ask whether things might have been influenced by his treatment of the Jews and others deemed "undesirable" among his own people; those who 'didn't fit' would surely have been massively oppressed, as in any dictatorship (whatever his foreign policy) so you have to ask whether or not other nations might have intervened. Back then, I'd say the answer would have been a definite and resounding "NO". There was no ethos of humanitarian intervention back then as far as I am aware, so I'd say the answer to your question is yes, Germany would have been left to its own devices.
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