CAS, I think what you said here is the way to go("You want to fix HAT sniping? Make this missile passively homing like a Stinger, then add deviation, or even a gravity modifier. Flies straight when locked on and misses at 20 feet when used against infantry. There you have it, a realistic, and vehicle-only rocket launcher. Could even leave the lock sound as at least then its no longer command guided.") That would solve allt he problems, except no tone until target is actually locked. If missle is just fired randomly, then it should blow up in your face. NO MORE HAT SNIPERS. They would all be dead and their true skills would show up in their K/D ratio.
PS. If this is the same CAS I have played with a few times you should really stop trying to act so much smarter than everyone and try to have fun. You come across as a prick LOL. It is just a game. If this isnt the same CAS, then never mind.
