SU-130PM, Škoda T 27, and FCM 50 t: An Infernal Trio

HeatResistantBFG: Little surprised at the hate for the FCM, honestly one of my fave tanks and I think it's super reliable. Good gun handling + Pref on a medium tank with heavy tank health/weight. 

So, I'd be interested as to what people would do to it to "balance" it that wouldn't simply make it overpowered?