In my game against Mojo, he built an IC in Norway and I questioned it after our game. He pointed out that, once England takes Western or Southern Europe, England has the economy (assuming Africa is in Allied hands) to build more than 8 land units per turn. So the Norway IC can allow the UK to build more than 8 land units per turn in the later rounds. This obviously could speed along the death of the Axis nicely. An Indian IC seems like suicide, unless Japan has a horrible turn 1. If Japan has any kind of naval presence in the area (obviously including a trannie), an Indian IC is a 15 IPC gift to the Emperor.
As for Japan, I think the number of ICs you build depends on your economy. If you’re still in the 40s, you can’t afford 3 ICs on the mainland. But if Japan is cashing out in the high 50s, then you can easily spend that 45 IPCs and still keep the troops and armor flowing. So it depends on your situation.
I am intrigued by the Australian IC for England. Timed correctly, you could cause Japan some headaches. But I think it would require that Germany lose Africa early in the game. Of course, if that happens, why not KGF?
WG