To counter the Japanese, I would recommend the following courses of action, that go a long way toward balancing the game.
UK Player strategy:
As the British, play on the defensive for the first turn, assuming the Japanese are going for a knockout punch against India or alternately Australia. With this in mind, I would use India turn 1 money to build infantry, moving the Burma forces to India and all possible Chinese (+US fighter) infantry in the same direction. I would also speed bump the Sumatra sea hex with India transport, leaving sub behind it. With Australia, I would contemplate building subs/fighters on Turn 1. Save the UK convey money on the 1st turn, and wait to see which way the Japanese start to commit on Turn 2 (India, VPs, Australia). The UK money can be used to quickly respond to the developing threat on turn 2.
UK Response to Japanese India attack
If the the Japanese commit to India, speedbump the India battleship on Turn 2, leaving the sub behind it and try to shuttle Australian fighters via the A.C. to India with the hope that the Japanese will concentrate on the BB and India. All UK money (T1 + T2) + India T2 income goes to India INF, + India money).
UK response to Japanese VP approach
India should go on land attack in SE Asia mainland. Australia should secure SW Pacific island air/sea bases with transports/subs/fighters. Use UK money for supplemental air/sea power with Australia or India, depending on where Japanese naval mass in concentrated.
UK response to Japanese Aus attack
Concentrate all Aus INF on S Wales and adjacent sea zone (adding transported US infantry. Use joint Aus subs/transports to speed bump Japanese navy. Use joint Aus/US occupied island sea/air bases in SW Pacific to delay/counter Japanese navy thrust.
US move (all three scenarios)
On Turn 1, I like to buy 9 subs. The main reason is that, coupled with the two subs likely to survive T1, I have 11 subs at my disposal as a cheap yet large force that is largely immune from Japanese air attack. I would make more sub purchases on Turn 2 (maybe 3-4, with a mix of surface ships/aircraft).
US KEY POINT - The fundamental US strategy with subs is to force the Japanese fleet to commit to full battle or retreat and give the US fleet offensive momentum. Either the Japanese have to quickly fall back, engage, or simply go all out after India (not much the US can do in this case, even with an attempt to invade Japan).
My rationale is that the US subs in masse enjoy the benefit of generally avoiding the mass of Japanese air power , unless the Japanese destroyers are brought to bear, meaning their surface fleet must engage. If they retreat, I spread subs all over the Western Pacific Japanese convey lanes and Japanese captured islands, with particular emphasis on Japan home waters. There are several specific approaches to this strategy, which I don’t have the time to delve into currently.
Overall, I find that an allout Japanese attack on India depends on how clever and lucky the UK player performs. The US simply cannot make a fundamental difference in time. However, the use of subs can make Japan’s effort a one shot deal and game over (by occupying every convey sea lane on the board with massive sub concentrations. I once won a game by knocking out the Japanese destroyers that were unwisely dispatched from the main fleet. Remember, when Japan masses its fleet, it must disperse it again to effectively county the large number of Allied subs causing economic havoc to Japan income. By forcing the Japanese armada to disperse, you take away their best chance of victory.
I am sure there are a number of counterarguments to these strategies, however, I generally do not believe the game is a slam dunk for the Japanese, although it does slighly favor them (60-40?).
Any thoughts?