I think there should be puffy ack on the CVs, but I agree with people that the implementation needs an overhaul.
Degradation of accuracy at range definitely needs to be modeled.
I remember one sortie, I'd gotten to around 15k on climbout and saw a blip headed in on radar. I got over to it, and there was a P51 at 20k licking his chops. He's just rolling over to make his attack, when there's a blast of puffy ack from a CV nearby, and his plane exploded. I felt bad for him, but I did have to admit how it happened was funny.
As for having puffy ack over land because they got the CV close... At the risk of being unpopular, er... more unpopular, isn't letting their CV park 20 yards off your coast a rather colossal failure on your side's part for defense? Just sayin...
Wiley.