I agree. I really like big and much explosions with much smoke and fire. PWM has some good explosions. Makes a real combat feeling.I hope the big american bombs can destroy complete districts, not only damage a farmhouse...
And big cannons like coastguns. Although usage is difficult, because the target is very far away. But to see them on map is good.
Dived Submarines: you know how C&C Red alert did that? They showed only a shadow in water. Maybe an easy way to add dived submarines? Together with watermines this could bring more thrill into the naval forces. Only an idea.