Historically, Italy needed German help in order to continue the war while Italy could provide little or no help to German operations.
However, I think that having a 3 vs 3 game is already an interesting improvement in the way of balancing the game. I do not know if the victory conditions will be for the individual nations in that case Italy should need a simpler victory condition but this could focus allied attention on Italy following a KIF (Kill Italy First) strategy. Churchill said that Italy was the soft belly of the Axis. Historically Italy was the first Axis nation to be defeated.
Italy suffered of poor leadership and little or no organization of war economy. For example in aircraft Industry there was no standardization with each industry producing its own models, with its own engine, weapons, etc. Each industry, leveraging on lobby and political support, managed to sell a batch of units to the Regia Aereonautica (Royal Aircraft), causing a variety of equipment with all the consequent problems in training, supplying and maintenance.
Still Italy entered the war with the fourth fleet of the world, same size of the French fleet, and an Army that seldom suffering of old equipment and lack of supplies, had a discrete manpower. So there is margin for some offensive operation using the Navy and the Army.
From an historical point of view Italy, seldom bound to Germany with the Steel Pact, initially conducted a parallel war with a limited support from Germany only after almost an year it was required a strong Wehrmacht intervention.
I’d like to see Italy able to conduct independent operation, at least in the initial turns. With the immediate objective to increase income damaging UK in Africa. On the long run however Italy should require the German support. If the game is historically inspired it is not possible to have it other ways.