@adam514 has previously commented that it is trivial to deal with the move of Anzac declaring war on Japan. Well sometimes it is but I now submit that it may not be so obvious.If I am planning a J2, I prepare I j1 which looks like this:

Note that the two coastal transports with one infantry each on them. These are there because of the move of moving British ships into the sea zone and anzac declaring war. This move is completely ridiculous. In fact, in 1939 when Britain declared war on Germany, the Australian Prime Minister at the time said “Great Britain is at war and as such we are also at war” or pretty close to that. Also, just the idea that Australia declaring war would put UK at war is absurd.
Perhaps it is less true with the transport in SZ35 which might attack Java although that does see reduced options because it can’t load.
While this is all well and good, it is not good if there is a reason to not proceed with the J2 DOW, perhaps Sea Lion. Results in an unnecessary loss of momentum for Japan.
Maybe you’re going to say that it’s a G40 problem, which is true but I think it is something which could be addressed in BM.
EDIT: dropped off quote from PM.