The Wittelsbachs under Emperor Louis IV. Probably could absorb Austria and the other Habsburg territories. Supposedly this would make the Wittelsbachs a much more powerful dynasty and probable rivals to the Luxembourg dynasty in Bohemia and Hungary. As for policies we could see a Wittelsbach emperor focusing more on Germany over Italy or France, trying to isolate and weaken their main rivals in Germany in Bohemia and Hungary especially because Habsburg conflicts with France arose due to Austrian ties to Burgundy and Spain. But please tell me if you think any of this is unrealistic.