After Desert Storm, one of the recommended changes was that the A-10 be transferred to the Army in exchange for the Army turning over their Patriot Missle Defense system to the Air Force. It really was a logical switch, putting close support under the Army and anti-aircraft assets under the Air Force. General Horner, then the AF chief was the one who suggested it, but it got shot down by the rest of the brass.
The A-10 is an ideal platform for the kind of low-level warfare and insurgencies that we have been dealing with. The F-35 is supposed to replace it. History has shown that trying to build a plane that is a "jack of all trades" tends to be a poor decision. It is far better to take a plane that has one outstanding quality and adapt it to new missions. Look at what was done with the F-15, an air-superiority fighter, which has now been converted to the F-15E Strike Fighter.
I would put the acquisition of the F-35 right up there with the choice of acquiring the B-18 over the B-17 during the 1930s. God forbid that we get into a shooting war with a major power, the F-35 will end up being just as useless as a B-18. Fortunately, in the 1930s, someone had enough foresight to order just enough B-17s to keep the assembly lines open. We would have been in a world of hurt had it not been there.