I totally disagree.
I have several AA50 experiences with loads of Pacific action.
USA can only get more income early in Norway, Algeria, Libya, Finland, and NWE? I think not. Algeria and Libya are only worth 1 - woohoo. NWE will always be taken back immediately in the early going, so that’s about a waste. There’s an easy 10 to get in the Pacific, and that’s just the NO’s. The Phillipines NO is also in the Pacific, and is not always as untouchable as it seems. If you go all out Europe, USA should only be getting 2 NO’s max the whole game.
In my opinion and experience, it is easier for the USA to have an impact on the game going Pacific than going Atlantic. But it depends a lot on what your opponent’s Axis strategies are. It takes an awful lot of money for the USA to go Atlantic if the Germans buy a fleet and maintain a lot of air, and if the Italians are healthy. There is only one foe to the West (no destroyer block breaks or double moves) and she is very preoccupied with many other things, and is tempted to over-extend herself. A good fleet and air player can really wreak havoc on Japan, and easily maintain over 10 IPC’s bonus income to the Allies. Also, if Japan can take and hold Australia, she automatically gets that NO whether India is held or not, and the UK can never get its NO, so Australia is fairly significant. Just having some USA air at different places in the Pacific can keep the Japs from zipping defenseless transports around at will. I think it’s often a bad idea to just let Japan go. 1 more thing - I have won 75% of my 1942 1v1 games, but I have also been crushed as Japan at least 3 different times, and it did not take long at all. And it didn’t take some Allied grand KJF strategy either. One or two of those times was even in the 1941 scenario.
USA can cause significant problems for Japan, and even take her down, and it doesn’t always take 5-7 rounds just to take a money island. Oh, and those money islands are worth 4, so each one is an 8 IPC swing, plus if Japan loses 3, which is quite plausible, it loses another NO. The UK NO in the Pacific is absolutely huge. The UK often sees her income plummet, and that extra 5 that can be gained by the USA early is absolutely huge.
There is no need to change anything in the game to get Pacific action. Maybe you just need to change your opponent.