The Italian tank M14/41 currently in the Tunisia campaign CBT phase II is really hard to use. This tank does not have a coaxial machine gun, which severly hinders its anti-personnel ability (historically, M14/41 deployed in North Africa do have coaxial machine guns).
On the other hand, the chassis machine gun is no better than nothing—you can barely even aim with it! Throetically, you have to turn the whole tank to aim it, and this is almost in=mpossible in real combat. Besides, the depression of this machine gun is also horrible—you usually end up firing into the sky!
Thirdly, the roof-mounted machine gun that can be used by the tank commander is also quite weird—its rotation rate is not synchronized with the turret tuning rate, which makes it hard to aim when players are in commander mode. In fact, when you turn the turret 5 degrees, the rooftop machine gun turns somewhere between 10-15 degrees!
In my opinion, in order for this tank to function properly at its campaign/tactical level, the machine gun problem listed above must be fixed in some way.