With A-10s they have to get:
1. A-10 maintenance parts in their supply system.
2. A-10 training for their helo mechanics.
3. Transfer all those A-10 Air Force pilots to the Army (fat chance).
4. Find sufficient operation support (fixed wing is going to have different requirements).
That's just off the top of my head, and I'm not in the A-10 community.
Hell, I’m well past my prime but if the army needed A-10 pilots, I’m ready!
The army really does need its own CAS.
Not to mention, those A-10s are probably really close to, if not haven't already exceeded, the "high time" flight hours that their airframes were designed for.
Re: #3.
Didn’t RAF pilots fly Harriers from Brit carriers? I’m only suggesting a trade of “services” not a wholesale “Change of Service”.
Yeah, I know, that’s not going to happen either... A little too “joint” for comfort.