I wouldn’t go to house rules as an option. Its a tough time for the allies, but you have to counter. If they build carriers, try building a bunch of subs. Their cheap to take hits, almost 3 to 1 cost of a carrier to dodge bullets. If you attack chances are you can ding the carriers and take out DD’s, and your allies can finish the job before Jap can fix them. Try to set up 3 fleets, all similar so if they attack one, you can counter a weakened Jap fleet with the other 2 before they repair. As for the Asian ground battle 3 IC would be tough. I’ve seen 2 and that was a bitch. It is easier for the UK if Jap has air, because its hard for them to protect newly taken tt. If they are dropping that much $ in tanks though ($6 a pop) like $40-$50 ipc they can’t be putting to many DD’ or other cheap ships into their navy making it more vulnerable IMO.