It's just a matter of matching the aircraft to the mission. Something like this makes a great ground support aircraft in a counterinsurgency environment. That's pretty much what they've had in the drug war in Central America for how many years now? I have to wonder why they have taken so long to look at something like this for the current Middle/Near East situation. If I remember right, they are made by an American company, and sold to Central America through license by the State Dept. Though with the state of globalization we have nowadays, that may have changed

The drones are great, but have their limits, especially in payload. The A-10C is awesome for it's intended role, which is to take out tanks, vehicles, and defensive hard points in support of ground troops in a large scale assault. All of these are what is was designed for, and was originally intended to go against the Red army in Europe if need be. It is not efficient in small scale assaults or support.
In the case of the A-10, politics also plays a major role. The A-10 was originally developed and paid for by the Army, not the Air Force. Once it was in production and placed in inventory, the USAF claimed ownership since it was a fixed wing aircraft. Since it wasn't their idea, and it was an Army plane, once they were transferred over, they were sent to the Air Guard to basically dump them. They couldn't be mothballed outright since the USAF didn't want to get Congress after them for the money spent (though the USAF did try to do that a couple times over the years). So one of the best ground support aircraft in the world becomes the red-headed stepchild of the USAF due to power squabbles among the general staff. In the 1st Gulf War, the deployment of Air Guard units, and the new doctrine of combine force operations gave the A-10 it's chance to show what it can do, and the USAF has put some serious money into upgrading them and extending their service life. They would be hard pressed to explain why they didn't

However, another retrofit to make them more of a counterinsurgency aircraft is very unlikely to happen, and would not be the most cost effective solution anyway.