Personally, I think that you should be able to shoot from the windows of vehicles, so that they wouldn't be so defenseless against foot soldiers. The smoke grens on the armored units is a good idea... probably wouldn't be hard to do. I think we need a Huey with a gun in the door. THAT would be fun. More civs is cool too. Maybe make some animals, but not too many... it would probably take a bite out of the FPS of the average player