You're missing the standard issue binoculars, which is pretty mission critical kit. Because without the binoculars, they can't see the friendly forces they're aiming their strafing run at.
That's not true, the new versions carry targeting pods and they can use the camera on the hellfires to zoom in too. In fact, planned upgrade packages will continue to modernize the A-10 weapons systems until the eventual final version designated F-16.