I did this in a game, results were mixed
The important thing is that it took almost the entire Japanese force earmarked for the DEI off course to take out Hong Kong. It was a bloodbath, the UK-Pacific Command lost more than it could afford to replace, but gained immense ammounts of time in exchange. The threat it presented to Japan meant they had to leave the DEI alone untill their 5th turn, and couldnt attack Russia, or threaten the US or ANZAC.
Combined with moving the US fleet to Hawaii on US1, it presented the Japanese with an overload of threats, none capable of attacking Japan, but all needing the bulk of the Japanese millitary’s attention.
China also faired well because of the lack of attention Japan could focus on it.
But in the end the Allies still lost……hard to say why. It was a loss in the European theatre, the US had to pump money over there and couldnt keep up the threat to japan…also, the US built too many transports in the pacific…I think im done building transports in the pacific for a while…at least untill turn 10. I spent 14 a turn on a TRN, INF, ART. That could have been an extra cruiser every turn there, or 2 subs.