With all the perk wishes being tossed around, I figured I'd throw my own hat into the ring.
I say perk the CV 5" guns. CV ack was ridiculously accurate before the patch, but both auto and manned are absolutely murderous now. Something changed with the 5" guns during the update because they are absolute lasers now. And before you give me anything about the prox fuses, I got tagged from about 10,000 yards downrange and 5000-6000ft altitude on one pull of the trigger (visible by shell contrails). Conversations with other people on country that night were almost unanimously in agreement: SOMETHING in the update significantly boosted the accuracy of the 5" guns to a level that's just plain ludicrous (at one point we had three guys all hitting the CV from different angles, far enough apart we couldn't all get hit by the same round almost simultaneously, and I think one gunner got all three of us).