We would not have to worry about most suicide bombers if HTC made the CV's stronger. 8000lbs is no were colse enough. in reality CV's could sail back to port with a huge deal of damage.
I don't think AH is out of whack with regard to CV hardness (lbs of explosive to sink). Here's a section from a previous scenario writeup. (Please let me know if there are errors in it, by the way -- always welcome to corrections.)
Ship hardness
Research on ship hardness of battleships is based on what it took to sink battleships at Pearl Harbor and what it took to sink US carriers throughout WWII. The battleship data is from
http://plasma.nationalgeographic.com/pearlharbor/history/pearlharbor_facts.html , and the carrier data is from Wikipedia on various carriers. For carriers that weren't sunk, some of them survived mutliple attacks separated by time or by ability to repair some damage in between attacks. For those, I list only the estimated most-damaging attack that they survived and not all the attacks. The torpedo typically carried by the Japanese B5N "Kate" torpedo bomber was the type 91 torpedo, which typically had 529 lbs of explosive. The largest torpedo typically carried by Japanese submarines was the type 95 torpedo, which had 893 lbs of explosive. The most-common bomb carried by the Japanese D3A "Val" divebomber had 551 lbs of explosive.
Battleship; Damage Taken; Result
California (BB-44); 2 torpedo hits; 1 bomb hit; sunk
Maryland (BB-46); 2 bomb hits
Oklahoma (BB-37); 5 torpedo hits; sunk
Tennessee (BB-43); 2 bomb hits
West Virginia (BB-48); 6 torpedo hits; 2 bomb hits; sunk
Arizona (BB-39); 1 torpedo hit; 8 bomb hits; sunk
Pennsylvania (BB-38); 2 bomb hits
Nevada (BB-36) 1 torpedo hit; 6 bomb hits
Utah (BB-31); 2 torpedo hits; sunk
Carrier Damage Taken Result
Lexington (CV-2) 2 torpedoes; 3 bombs sunk
Saratoga (CV-3) 6 bombs
Yorktown (CV-5) 2 torpedoes; 3 bombs sunk
Enterprise (CV-6) 3 bombs
Wasp (CV-7) 2 torpedoes sunk
Hornet (CV-8) 3 torpedoes; 5 bombs sunk
Essex (CV-9) kamikaze
Yorktown (CV-10) 1 bomb
Intrepid (CV-11) 1 torpedo
Franklin (CV-13) kamikaze