Can't have a good fight within 30K of a CV anymore. +1, though I think no puffy ack is a bit drastic. Perhaps simply a wider less accurate spread of fire.
As I said, make puffy ack so that's actually fired BY guns, not automatically generated around the target. You'll see the whines about the effectiveness of puffy ack decline TREMENDOUSLY.
The problem is that puffy ack is instantaneous and radar guided, and the amount of flak bursts is the same regardless of the size of the bounding box (IE, a fighter and four-engine bomber have two different sized "target" boxes, but both receive the same amount of ack. The result is a fighter is more likely to go down because the flak is more concentrated). Make ALL AAA so that it's fired by the guns. That means it will actually be possible to evade flak to a point by changing direction. Thus, fighters and small attack craft (IE, SBDs and D3As) will actually have a chance of getting through the flak barrage since they can more easily change course to throw off the aim of the gunners.
It would also be nice if EVERY gunner didn't zero in on one target the way they do now, or prioritized BUFF formations over fighters, but this change would be a good start.