A menu with a video running on the background sounds pretty nice.
It doesnt have to be very heavy on your pc for loading times, i dont see why it would be any heavier than say, the commercial vids in KF lobbies except being larger and more high quality.
What i would like to see is a scene that kind of resembles both the initial art , the city limits in greyish tints with some explosions and the planes flying overhead. Basically the menu as displayed by Miro!
The camera moves towards the city, and shows some of the carnage that has already been done. No fighting, just empty streets, blown out houses, huge smoke columns and bodies lying everywhere.
Maybe move over a defensive position with germans or russians lying in wait for the enemy attack, with bodies lying in front of the position.
(maybe its best for them to be Russian, kind of to show the cliche of russians running into defensive position, not-one-step-back bull**** isnt appropriate for ROHOS)
The camera could go low on the ground moving past the head (mangled head?) of a body lying in front of that position and move through the streets untill it reaches the end of the street which goes a bit downhill and harbors the enemy soldiers waiting for an attack, invisible to the defensive positions.
As HOS theme song builds, the attack can begin. Some slowmow scenes of the camera moving through the assault with soldiers going down left and right etc.
But ofcourse the entire battlescene isnt needed and the streets could be empty except for the corpses and destroyed tanks throwing columns of smoke in the air, giving an atmosphere of doom and gloom.
As the music builds the camera moves in close through the carnage, while at the start its all relatively far away.