The Javelin representation is not accurate. You need to lock on to a target before you fire. Realism here would add to the tension as it takes some time to set up a shot. Where are the reloads. Why do Javelin Teams in a HMMWWs only have one missle with them?
The Mk19 Grenade launcher needs more realistic sights. check out AA3 as an example. I'm not sure the the TOW Sights and firing process are completely realistic, either.
People that are interested in a game like this want it to be as realistic as possible.
Just a suggestion.
Thanks,
LANshark