If France somehow could be in a similar situation as Germany there and still fight on against the massive odds. Maybe have the KoF and the HRE switch places? The KoF being a decentralized mess who later unite, and the HRE being a powerful centralized but under performing state.
For this to be a thing, the PoD needs to be all the way back in the 800s when Charlie's kids were bickering over who had the most crowns.
Lothar should win, annex France and Aquitaine, and become a decentralized mess of duchies while Germania goes back to, I dunno, being ruled by Wends or Slavs or something.