"the ukrainians had two boots that didn't fit, one from stalin and one from hitler."
read it in a solzhenitsyn book, not sure if quote was his.
the plan in the east could not have worked. even if the germans won the campaign, and successfully occupied all of eastern europe/western USSR, they would soon after realize that "passification" of the various peoples would be costly in lives, time and energy - at best. worst case, impossible.
once the ukrainians realized that germany would not allow an independant sate, they organized a resistance. one such group, the ukrainian insurgent army or UPA, fielded 200,000 men and for a while in 1943 controlled most north-west ukraine. these groups fought against stalin's army at the same time! talk about about a david between a two-front goliath! anyway, hitler's plan was to exploit the oilfields of the USSR, and send it all back west to fight the allies. resistance groups like these would have delayed the plan for years, and the allies would have reached berlin from the west eventually.