Have you ever been in combat with an A10? I have. I was literally the guy putting a laser (from my Shadow 200 TUAV) onto a weapons cache building in Tal'Afar, Iraq and watched an A10 BRRRRRTTTTTT cut the building in 1/2 before it ignited from all of the ordinance inside.
As to showing the A10's effectiveness in Desert Storm, that was what, 1991? The Soviet T90-A was designed to specifically be fine against 30mm GAU8 rounds, and it was released in 1993. Soviet armor divisions also have serious business anti-aircraft like the Pantsir system, which would obliterate an A10 no question. All recent Soviet weaponry, up to and including the most recent T14 Armata would survive strafing from an A10 just fine, and in the meantime provide targetting data to anti-air platforms to take it out.
TL;DNR: Using the weapons from the early 1990s to fight a war now is a great way to lose. The A10 is an amazing machine, but so was the P51 Mustang in its heyday.
:-)
If you get a combat patch and combat pay, it is combat. If your operational flight record says you have 482 combat flight hours, what would you call it (that is the number of hours I got in OIF II 2003-2004). You don’t have to kick down doors and drop bodies with your hands to be in combat. It was the RQ-7A in specific I flew as the RQ-7B is a bigger airframe with better endurance.
The A10 is a lot less vulnerable to ground-fire and MANPADS than helicopters, can carry more and loiter longer. It's like a AC130 but cheaper to operate and with more missiles.
While the gun isn't going to be effective against a modern armored division having a high capacity missile truck is worthwhile as evidenced in desert storm.
That said, time to get on scene is very important and the A10 is very poor at that compared to other fixed wing aircraft.