The first are car alarms, how about when a soldier fires at a static car, such as the ones on Muttrah City, its car alarms go off? This is seen in the Battlefield 2 trailer Battle at Mashtuur City. Listen up and look at seconds 22-23. This is just a small suggestion and doesn't effect gameplay issues but I think it will give off some extra ambient noises while fighting an urban setting.
My other suggestion is when a soldier dies while in the driver position of a Humvee, Vodnik, etc, his head hits the steering wheel and the car horn goes off until the body dissappears or when a new player takes up the driver position. Again, just extra ambient noises
My last suggestion is having each squad member's line of sight on the tactical map. For example, when you hit the caps lock key it brings up the tactical map and you come up as a "dot" with an outline of your line of sight. These line of sight "bars" are shown circled in the screenshot.

What I'm saying is it possible to have your other squad member's line of sight bars shown on the tactical map too? I think this can help with fire teams in the squad and covering each other going from street to street in urban areas.











