Well, didn't I read that the Queen Elizabeth would only deploy with one squadron of 12 F-35C during peacetime?
Regardless, my point was US or French Naval Aircraft could fill the decks in the short-term. Really, a lot of possibilities when you think about it. For example the Charles de Gaulle will go down for a refit at some point and likely for a considerable amount of time. Plus, the Queen Elizabeth could deploy to the US East Coast and help work up USN Squadrons. Before they have to deploy on a Cruise. Also, remember only about half of USN Squadrons are deployed on American Carriers at any given time.
Personally, I would love to see the Queen Elizabeth. Deploy with a deck full of Royal Navy F-35C's. Yet, at least in the short term that is not going to happen.