I agree that the CV damage model needs some major attention. However, aerial bomb modeling is equally bad. In the real world HE bombs were next to useless against even lightly armored combat ships. This is because the bomb casings were thin walled, breaking open on impact with a hard target, with the detonation being of rather low grade. The resulting blast damage would not disable a heavy cruiser or a carrier. In fact, near misses often produced more damage than direct hits due to the hydrostatic shock transmitted to the hull. AP and SAP had much thicker casings and delayed action fuzing to allow detonation deep inside a ship. However, the explosive charge was usually 40-60% less than a HE bomb of the same weight.
We need AP and SAP bombs (armor piercing and semi-armor piercing). Typically, these were not available to land-based aircraft except for special missions, where they were almost exclusively carried by bombers. Carriers often carried about a 50-50 mix of SAP and HE bombs. They could be hung on any aircraft capable of lifting them. Finally, perk the SAP bombs, and set all fuzing at a minimum of 2,000 feet to disuade the suicide junkies who otherwise couldn't hit their bellybutton with a chair. If they wish to crash into a ship with HE bombs, their 2k load will have no more effect than 500 lbs of SAP.
So, increase the total weight of HE ord to kill a ship by a factor of 4. Give us SAP bombs, available only on carriers (no change in total weight for sinking).
Next, model an incremental damage model for ships, including gradual loss of speed, fuel and ordnance. Allow for short delays to repair flight deck damage (a good crew could patch a minor hole in 5 minutes, significant damage in 30 minutes or less). Enable manning of destroyer 5", 38 caliber guns (single gun, quick firing turrets) and watch the effectiveness of CV groups approach that of reality. It would also be a good idea to toss in a random factor of a catastrophic "golden BB" hit. that disables the ship (any ship) for one hour. In other words, it's dead in the water and for CVs, flight ops cease.
My regards,
Widewing