The way this question asked is a bit too speculative and may be deleted for that reason, I'm not a mod so I can't say for certain.

I suggest you ask the question again perhaps in a more specific manner. Some suggestions.

If Hitler had died in 1934 (or fill in the year you want to know about) who would have succeeded him. How did this person's view for Germany's future differ from Hitler's?

Was Hitler unique in his plans for German expansion through war if necessary or was he just part of a larger movement?

If Hitler had died in the July 1944 assassination attempt would his successor have continued the war?