see...when you have 2 people repping a LB then you need to be tactical with your stingers/whatever. seen this style before in Ultima Online.
In the pvp when trying to kill another player can be pretty difficult as there are a few healing skills (bandages/magic) so the targeted player can spam heal and just keep running. However, if you are in a group then it's easy... a tactic called "Dumping". First some members of the group would precast a damage spell whilst one paralysed the target. Once he is paralysed then you all dump your damage at the same time, dealing more damage than their health pool in a tiny time frame making healing impossible.
can totally be used here and pretty sure some do already. Get one guy to pop off a stinger so the LB loses it's flares then he/she and how ever many others all target the lb and pretty much launch at the same time. probably need 3 stingers to be sure of insta death.
I always try and get a hard lock on an enemy, then deliberately semi lose the lock and relock in the attempt to make them panic and pop their flares/ecm. that leaves me to re aquire the lock, pop both heatseakers (if in air vehicles) or spam stingers with all of them hitting