I wonder, why you seem to be so pessimistic about the perspectives of WAllies? USA is far ahead in the Pacific, having already seized Rabaul, Truk and the Marianas. Japan suffered just a mini-Midway this turn with losing carriers 2:1 to the US. Singapore and Batavia are still CW controlled. China is in good shape, both National and Communist China. Japan is doomed.
Germany has reached its highwater mark in the East. Russia can hold the Urals and will regroup. I assume, most of the factories have been moved to Siberia? Russia still holds Murmansk, Leningrad, Sevastopol, Archangel, which will force Germany to some mopping up operations.
The WAllies almost kicked Italy out of the war, in JA42! They enjoy still a safe stronghold on the Italian mainland plus all of Sicily and Sardinia as staging area. So far they have achieved all their victories with almost only their starting forces after USA joined. The full industrial power of USA has not yet started to show.
Yes, it was a bold attempt trying to kick Italy out already in 1942 and it almost succeeded! In MJ43 the WAllies can choose again from several target areas in Europe, when they will be back with overwhelming force. SU will take some time to recover its forces, but will push Germany back in 1944.