I had a scenario where the Franks fall into instability after Charles Martel dies early . No battle Tours since Odo takes care of the Moors . A few decades the Frankish Empire is full of instability and disunity with Aquitaine being the most powerful. A Saxon Man unites The Saxons and forms Germany , integrating Allemania , Bavaria and Frisia into his realm becoming the Major power in Europe . Not as much as the Franks but still Pretty powerful. Also the Man ‘s successor converts to Christianity.