The 6 dollar tank is VERY necessary. By having this, it prevents Germany from being a beast. If the EUS attack with the 2SS becomes a success for Germany, then the Allies can’t retake Africa right away…nor can they readily get help to Russia. Without any immediate impact in the Atlantic, Germany can run away with 5 dollar tanks…the 1 IPC increase helps reign in Germany from becoming a freight train. The Allies can win this about 45% of the time, but you have to either start balanced or go KGF. While KJF is fun, I’ve found that it is hard to keep Germany in check with UK/Russia without some luck. It becomes a lot harder if EUS losses it’s fleet.
The complex in Manchuria isn’t needed, but that depends on your “attack” route. I find using 4 transports dropping 1 turn south, then next up North, alternating like that provides a good two prong attack while keeping the US fleet in check to prevent an island attack (Borneo, EI, Phillipines). I do agree with the inf for Japan, but Germany needs the inf/art balance.