If anything you should be complaining that the Stinger is too easy to use. It is not hard to avoid killstreaks 95% of the time, you just gotta be cautious.
If you don't like people getting a Chopper/AC130 in the beginning of the game, you kill them before they get to 4-0. Yes, some people are good enough to get 4-0 before you find them, but odds are that person would normally use 5-7-11, or he doesn't get an AC130/Chopper. So maybe every 10 games you see this happen, at best.
Maybe make the hind worth using?
I think it would be cool to have a little bit longer to shoot down CP droppers with the Stinger, but I'm too slow/busy to get them. Off the top of my head I don't even know if I have blown one up but I believe I did. Also maybe shoot the EA dropper and make it disrupt where those packages go.