The damage you might see would be the fan, compressor and hot section with a borescope inspection but what about the dust that will settle in the balance and signal lines, FCU's and labyrinth seals. How detailed will these inspections need to be to really give it the tick in the box safe to fly approval?
Also the airlines of course want to get up in the air again but what about the leasing companies that own the engines and airframes, are they going to let the airlines fly their equipment if their is still some doubt?