One more thing to add on this - at one point a retired USAF official was quoted as saying there may have to two different versions of NGAD, a European theater variant and a longer ranged Pacific variant. I think we can say with confidence that any consideration of producing a Euro centric version of the airframe have been dropped at this point.
Found the relevant quote:
"Retired Gen. James M. Holmes, former of Air Combat Command, has said there may be two variants of NGAD: one with long range and payload for the Indo-Pacific and one more oriented to the relatively short ranges between possible battle areas in Europe."
www.airforcemag.com
Found the relevant quote:
"Retired Gen. James M. Holmes, former of Air Combat Command, has said there may be two variants of NGAD: one with long range and payload for the Indo-Pacific and one more oriented to the relatively short ranges between possible battle areas in Europe."

Brown: NGAD Will be a Multirole Fighter - Air Force Magazine
Air Force Chief of Staff Gen. Charles Q. Brown Jr. testified to the House Armed Services Committee about the Next-Generation Air Dominance fighter and the F-35 purchases in the 2022 budget.
