As a former active duty Marine, I can tell you that if the Chair Force wants to mothball the A-10, give ‘em to the Marine Corps!
We could still be flying and fighting with those awesome bastards in 2040!
Awesome weapon and one of the best Air-Ground support “fast movers” in the air! It can fly low and slow to devastate the enemy in front of you (I have seen a pilot walk a trench line with his Gatlin!)! And it can come in hot and fast with air-to-ground missiles!
I know it is old, but it is still a VERY powerful and effective weapon for the close air-ground support which the Marine Corps (and often Army) needs!
Of course, we all know the Marines are flush with cash and can build an entirely new infrastructure to support a new jet, set-up logistics and support necessary to service, maintain, upgrade, repair, arm and re-arm, and train many more pilots. And we can't forget the Marines will need to build runways (A-10s can operate from "austere" places but not dirt).
Nice to fantasize about but realistically, not feasible.