It is Rather than spend the money on redesign for battlefield support they would be better off with a low cost re-design/re-deployment of a long range close air support asset. Something like an A-1 Skyraider which was used very successfully in multiple support roles during Vietnam...with a little updating I'm sure they could get more than 900 miles range out of the things for less money, especially with a flying gas can on site.
I have often wondered if we will ultimately return to more numerous, cheaper aircraft for conflicts such as these. A P-51 would provide suitable CAS in Afghanistan for Pete's sake...
There are two issues with this, I think, though... and Im just thinking out loud...
The first is the cost of re-fitment, I think. We have plenty of "reserve" aircraft in quasi-bone yards but what would it cost to get a Skyhawk/Skyraider/Tiger/Sabre back to flying condition? Would manufacturing plants have to be retooled for parts, etc, etc? Are the engines even made anymore? The dated avionics? Do you swap them out? How would you integrate the dated systems with the combined arms command and control structure in place today?
The second issue is the argument which has won for decades. When you have the best aircraft and can use it to its full capabilities (example of opposite: Vietnam), no one comes up to fight you.
If we started putting A-4's, F-5's and F-4's back into service for CAS, we'll still need G4 and G5 ATA capable A/C to deter threats. An Iraqi Fulcrum would have a field day with a flight of A4's.
Circular argument... but an interesting thought.