How San Carlos geography constrained Argentine air attack

Would A-10s armed with bombs and Mavericks have caused much more damage at San Carlos?

Probably somewhat more, especially with their gun, but terrain would still prevent effective long-range missile attacks and preserve the defenders' core advantage.

Replacing Argentine aircraft with A-10s leaves the surrounding terrain at San Carlos unchanged. An attacker must clear the hills before it can acquire ships and launch a Maverick, which removes much of the weapon's nominal stand-off advantage. The same geographic objection is applied to Exocet approaches. Bombs would still depend on suitable fusing, and retaining the original fusing problem would limit the benefit of the replacement aircraft. The 30 mm cannon is identified as the most plausible source of extra damage during close passes. That is a qualified forecast about the counterfactual, rather than a claim that different aircraft solve the anchorage's tactical geometry.