The speed at which bullet casings get ejected vertically up into the air is not very high which causes a lot of trouble when in a tank turret and the heavy autocannon is firing with its ejection port pointed up to the roof of the turret. A block that can be put on the ejection port of the cannon or gun that is electrically driven to eject casings further away from the ejection port would be a great and easy solution for this. It also looks nice to shoot a few bullet casings up into the sky a meter or two :D