From: Connecticut, USA
Looks great Kirk!
The two Pensacola class cruisers were commissioned in 1929 and 1930. However, they were laid down in 1926 and 1927. As far as WPO is concerend, since there was no Washington Naval Treaty, one would think the ships in the game would have a more balanced armor arrangement then the ships had in real life, as well as an aircraft hanger.
Also, assuming the USA has been at war since 1926, one would think the Pensacolas' construction would be expedited, resulting in the ships entering the game around late 1927 or 1928 - possibly with additional sister ships, too. One could use the same argument for additional Furutaka class cruisers, as well as the entry of the UK's Kent (County) class cruisers around the same time.