The very first world history book I've read portrayed Wallenstein as a German patriot, with the vision of a unified mercantilist German Empire so as to compete with the French and English. But such noble aspiration enraged the reactionary Hapsburg emperor, who tried to replace him and ultimately murdered him.
It was a somewhat inaccurate portrayal of a mercenary leader***, but I still wonder if he was allowed to carry on with what he was doing, it would bring (a devastated) Germany closer to unification.
***(I wonder where it came from, it's a mainland Chinese book so maybe they borrowed from DDR official historiography?)