Thats why we have LIGHT fighters, those are little uber bomber killers, almost inposible to hit it with snac or razor, ofcourse if you know how to strafe, and you cant kill it with your shield busters. But they are not popular, probably because of low amount of hull, but thats not a problem, you should try them.
Increasing speed of guns its good idea because its gonna decrease the time you need to kill someone.