Brock 007: Very interesting comments.
I especially agree with you over the 'historical' force balance. Just to add to the comments on the naval disparity, the land unit disparity, counting the UK/Commonwealth/India alone is in reality much greater than normally seen in the game. The 'chance of taking India' exists solely because the British (like the Americans and rightly so) regarded the German/Italian grouping as being a much greater threat, in the long term, than Japan. So when Burma was being taken and India and Ceylon were under attack the British still retained in the Middle and Near East a fully equipped and experienced Indian force that alone was more powerful than anything the IJA had available. (this was the 4th, 5th, 6th, 8th, 10th Indian Infantry and the 31st Indian Armoured Divisions. The first two having a real claim to being the best Allied infantry divisions of the war, measured in terms of length of combat and success).
So I (apart from my love affair for BB's and CV's) I most enjoy scenarios that boost the Japanese - as much as possible!!