Perhaps he imagined it as a Ukranian dominated state (instead of Polish dominated, with Germany putting the Ukrainian into power) who would then seek German help in liberating other Ukrainians from Russia, and as Russia would probably be the German arch-nemesis here then Galicia could be a hound waiting to be unleashed.
Ow! Switzerland German? Damn, don't let the Francophones, Italianophones, or Romanshphones hear that.
And yes, I know that Italianophones is pushing it and Romanshphones is just wrong but it was quicker than typing Italian-speakers, or Romansh-speakers; though it would have been quicker since I wouldn't've had to type this.