BVRAAM,
Ambition is one thing but you have to be realistic as well. The FAA will never go and fly the F15 or F22. Why would they?
An FAA F35 pilot MAY go and fly F35s with the USMC as the two primary roles are different and, therefore, there is something to be gained by the exchange of the two pilots. Perhaps an FAA F35 pilot MAY go and fly the F18 with the USN as that has traditionally been a QFI exchange. FAA to USAF.......why?
No matter how much it enthuses you, an FAA pilot flying the F22 is pretty delusional.
If you need more motivation than the prospect of operating an F35 from one of the new carriers then maybe you need to look at different jobs.