I just don’t see how KJF is even possible with the new sub rules. 6IPC for a 2 attack sub with first strike capability and only hits naval units seems really overpowered to me.
J1, 2TRN and 1 IC. Wait to see what US does. If it’s KJF, then mass subs.
Sure japan doesn’t go far on the mainland, but who cares? UK can’t do anything in the atlantic without the US, and the US can’t fund a balanced pacific and Atlantic fleet. Japan will get India, and a handful of other 1 IPC spots in asia with just their starting units and end up with around 40 IPC which will be enough to counter any US pacific fleet purchases with subs.
Leave the Subs in SZ 60 and wait. It takes 2 turns to get to anything important in the pacific. If the US attacks Borneo, or Philippines, you counter and wipe it out with your subs and your starting fleet likely parked outside India.
Every turn US spends trying to counter the subs in the Pacific is 1 step closer to Germany taking Moscow and the game is over. Maybe KJF will work if they don’t use this tactic, but i have a feeling once people realize it it will be the defacto counter to any KJF strategy.