Came up with new US enhancer.
Atlanta Class Cruisers
While US is at War, any sea zone with a US Atlanta Class Cruiser is treated exactly as if it contained an antiaircraft gun. There is a round of AA fire before battle even if the US fleet is attacking (see AA gun rules). These cruisers cannot do shore bombardments in any battle.
Atlanta class was composed of eight dual 5-inch/38 caliber gun mounts (8 × 2 5-inch guns). This battery could fire over 17,600 pounds (8,000 kg) of shells per minute, including the radar-fuzed “VT” anti-aircraft (AA) shells. The Atlanta Class Cruiser did not fare well in Surface Combat. It had a shortage of gunfire directors for the main 5 inch gun battery.
You can purchase 1 of 2 types of Cruisers. Regular or Atlanta class. Same cost. Still hit/defend at 3. I have 2 different pieces for the US cruisers. You may replace half of game setup (1942 setup) cruisers with Atlanta Cruisers.