You shouldn’t get barraged with negative feedback, or even have to worry about it. The guys who made Axis & Allies did their best to explain the rules but there are a lot of them, especially for Global 40, and they were under pressure to put it together and make it ready for sale. Also, while we play, we end up with scenarios that they might have thought simply wouldn’t happen or just didn’t think of and the explanations in the rule book simply can’t cover every possible situation.
For instance, take your example. They might have thought that any carrier would surely have other warships, particularly destroyers, for protection. OR, since the carrier is a capital ship, they might have figured no one would risk attacking with a single submarine since you need to get 2 hits @ 2 to sink it so the sub’s surprise strike is basically nullified at least for the first hit. However, different people have different playing styles that work for them even if it is unconventional.
I’m just saying that if you have a question involving the rules, don’t be afraid to ask here. A lot of these guys have played a lot of games and really have seen a lot of “weird” stuff. What’s more, they are happy to answer any questions you may have because we all want as many people as possible to not only play these games, but enjoy them as well.
Good luck to you on the rest of your game.